| P Blood-Group System               | 
              | P Selectin use P-Selectin               | 
              | p Wave               | 
              | p-Aminoazobenzene               | 
              | p-Aminobenzoic Acid use 4-Aminobenzoic Acid               | 
              | p-Aminohippuric Acid               | 
              | p-Aminosalicylic Acid use Aminosalicylic Acid               | 
              | p-ANCA use Antibodies, Antineutrophil Cytoplasmic               | 
              | p-Azobenzenearsonate               | 
              | P-B Antibodies use Antibodies, Heterophile               | 
              | p-Bromdylamine use Brompheniramine               | 
              | P-Cadherins use Cadherins               | 
              | P-Cell Stimulating Factor use Interleukin-3               | 
              | p-Chloramphetamine use p-Chloroamphetamine               | 
              | p-Chloroamphetamine               | 
              | p-Chloromercuribenzoic Acid               | 
              | p-Chlorophenylalanine use Fenclonine               | 
              | p-Dihydroxybenzenes use Hydroquinones               | 
              | p-Dimethylaminoazobenzene               | 
              | p-Fluorophenylalanine               | 
              | P-Glycoprotein               | 
              | P-Glycoproteins               | 
              | p-Hydroxyamphetamine               | 
              | p-Hydroxybenzoate Hydroxylase use 4-Hydroxybenzoate-3-Monooxygenase               | 
              | p-Hydroxynorephedrine               | 
              | p-Hydroxyphenylpyruvate Hydroxylase use 4-Hydroxyphenylpyruvate Dioxygenase               | 
              | p-Hydroxyphenylpyruvate Oxidase use 4-Hydroxyphenylpyruvate Dioxygenase               | 
              | p-Methoxy-N-methylphenethylamine               | 
              | p-Octopamine use Octopamine               | 
              | P-Selectin               | 
              | P-Type Calcium Channels use Calcium Channels, P-Type               | 
              | P0 Glycoprotein use Myelin P0 Protein               | 
              | P0 Protein use Myelin P0 Protein               | 
              | P1 Bacteriophage Artificial Chromosomes use Chromosomes, Artificial, P1 Bacteriophage               | 
              | P1 Phage use Bacteriophage P1               | 
              | P1 Purinoceptors use Receptors, Purinergic P1               | 
              | p100-GAP Protein use p120 GTPase Activating Protein               | 
              | p105-Rb Protein use Retinoblastoma Protein               | 
              | p120 GTPase Activating Protein               | 
              | p120-GAP Protein use p120 GTPase Activating Protein               | 
              | p125-GAP Protein use p120 GTPase Activating Protein               | 
              | p145(c-kit) use Proto-Oncogene Proteins c-kit               | 
              | p14ARF Protein use Tumor Suppressor Protein p14ARF               | 
              | p150,95 Antigen use Integrin alphaXbeta2               | 
              | p16 Genes use Genes, p16               | 
              | p16INK4 Genes use Genes, p16               | 
              | P2 Phage use Bacteriophage P2               | 
              | P2 Protein use Myelin P2 Protein               | 
              | P2 Purinoceptors use Receptors, Purinergic P2               | 
              | p21 cdc42 use cdc42 GTP-Binding Protein               | 
              | p21(c-Ha-ras) use Proto-Oncogene Proteins p21(ras)               | 
              | p21(c-Ki-ras) use Proto-Oncogene Proteins p21(ras)               | 
              | p21(c-ras) use Proto-Oncogene Proteins p21(ras)               | 
              | p21(N-ras) use Proto-Oncogene Proteins p21(ras)               | 
              | p21(ras) use Proto-Oncogene Proteins p21(ras)               | 
              | p21(v-Ha-ras) use Oncogene Protein p21(ras)               | 
              | p21(v-Ki-ras) use Oncogene Protein p21(ras)               | 
              | p21-Activated Kinases               | 
              | P22 Phage use Bacteriophage P22               | 
              | p24(HIV) use HIV Core Protein p24               | 
              | p27(rex) use Gene Products, rex               | 
              | p28(v-sis) use Oncogene Proteins v-sis               | 
              | P300 Event-Related Potentials use Event-Related Potentials, P300               | 
              | p300-CBP Transcription Factors               | 
              | p34cdc2 Protein use CDC2 Protein Kinase               | 
              | p37(v-mos) use Oncogene Proteins v-mos               | 
              | p38 Mitogen-Activated Protein Kinases               | 
              | P388D(1) Leukemia use Leukemia P388               | 
              | p39(c-jun) use Proto-Oncogene Proteins c-jun               | 
              | P40 T-Cell Growth Factor use Interleukin-9               | 
              | p40(tax) use Gene Products, tax               | 
              | p42 MAP Kinase use Mitogen-Activated Protein Kinase 1               | 
              | p42 MAPK use Mitogen-Activated Protein Kinase 1               | 
              | p42(Mitogen-Activated Protein Kinase) use Mitogen-Activated Protein Kinase 1               | 
              | P450(c17) use Steroid 17-alpha-Hydroxylase               | 
              | p48(v-myb) use Oncogene Proteins v-myb               | 
              | p53 Genes use Genes, p53               | 
              | p53 Tumor Suppressor Protein use Tumor Suppressor Protein p53               | 
              | p55(c-fos) use Proto-Oncogene Proteins c-fos               | 
              | p55(v-fos) use Oncogene Proteins v-fos               | 
              | p55(v-myc) use Oncogene Protein p55(v-myc)               | 
              | p56 lck use Lymphocyte Specific Protein Tyrosine Kinase p56(lck)               | 
              | p62(c-myc) use Proto-Oncogene Proteins c-myc               | 
              | p65(gag-jun) use Oncogene Protein p65(gag-jun)               | 
              | p68 Kinase use eIF-2 Kinase               | 
              | p68(c-rel) use Proto-Oncogene Proteins c-rel               | 
              | p70 S6 Kinase use Ribosomal Protein S6 Kinases, 70-kDa               | 
              | p70s6k use Ribosomal Protein S6 Kinases, 70-kDa               | 
              | p75(gag-fos-fox) use Oncogene Proteins v-fos               | 
              | p85(gag-mos) use Oncogene Proteins v-mos               | 
              | PABA use 4-Aminobenzoic Acid               | 
              | PACAP Receptors use Receptors, Pituitary Adenylate Cyclase-Activating Polypeptide               | 
              | PACAP Receptors, Type I use Receptors, Pituitary Adenylate Cyclase-Activating Polypeptide, Type I               | 
              | Pacemaker, Artificial               | 
              | Pacemakers, Biological use Biological Clocks               | 
              | Pachira use Bombacaceae               | 
              | Pachycarpine use Sparteine               | 
              | Pachydermatocele use Neurofibroma, Plexiform               | 
              | Pachydermoperiostosis use Osteoarthropathy, Primary Hypertrophic               | 
              | Pachygyria use Lissencephaly               | 
              | Pachymeningitis use Meningitis               | 
              | Pachyonychia Congenita               | 
              | Pachyonychia Congenita Type 1 use Pachyonychia Congenita               | 
              | Pachyonychia Congenita, Type 1 use Pachyonychia Congenita               | 
              | Pachyonychia Congenita, Type 2 use Pachyonychia Congenita               | 
              | Pachyrhizus               | 
              | Pachyrhizus thunbergianus use Pueraria               | 
              | Pachysandra               | 
              | Pachytene Stage               | 
              | Pacific Island Americans use Oceanic Ancestry Group               | 
              | Pacific Islands               | 
              | Pacific Northwest use Northwestern United States               | 
              | Pacific Ocean               | 
              | Pacific States               | 
              | Pacifiers               | 
              | Pacing, Cardiac, Artificial use Cardiac Pacing, Artificial               | 
              | Pacinian Corpuscles               | 
              | Pack Ice use Ice Barrier               | 
              | Package Inserts use Product Labeling               | 
              | Package Inserts for the Patient               | 
              | Package Inserts, Drug use Drug Labeling               | 
              | Packaging, Drug use Drug Packaging               | 
              | Packaging, Food use Food Packaging               | 
              | Packaging, Product use Product Packaging               | 
              | Packaging, Viral use Virus Assembly               | 
              | Packed Red-Cell Volume use Hematocrit               | 
              | Packers use Packing Industry               | 
              | Packing Industry               | 
              | Packing of Equipment and Supplies use Equipment and Supplies Packing               | 
              | Packing of Tobacco-Derived Products use Tobacco-Derived Products Labeling               | 
              | Paclitaxel               | 
              | PACS (Radiology) use Radiology Information Systems               | 
              | Pact use Treaties               | 
              | Pactamycin               | 
              | Padus avium use Prunus padus               | 
              | Paecilomyces               | 
              | Paenibacillus               | 
              | Paeonia               | 
              | Paeonia officinalis               | 
              | Paeoniae Radix use Paeonia               | 
              | Paepalanthus use Eriocaulaceae               | 
              | PAF Acetylhydrolase use 1-Alkyl-2-acetylglycerophosphocholine Esterase               | 
              | PAF-Acether use Platelet Activating Factor               | 
              | Paget Disease Extramammary use Paget Disease, Extramammary               | 
              | Paget Disease, Extramammary               | 
              | Paget's Disease of Bone use Osteitis Deformans               | 
              | Paget's Disease of Breast use Paget's Disease, Mammary               | 
              | Paget's Disease, Extramammary use Paget Disease, Extramammary               | 
              | Paget's Disease, Mammary               | 
              | Paget-Schroetter Syndrome use Upper Extremity Deep Vein Thrombosis               | 
              | Pagetoid Reticulosis               | 
              | Pagoda Dogwoods use Cornus alternifolia               | 
              | Pagophilus groenlandicus use Seals, Earless               | 
              | Pagurus use Anomura               | 
              | PAHO use Pan American Health Organization               | 
              | PAHO Directing Council               | 
              | PAHO Executive Committee               | 
              | PAHO Regional Centers               | 
              | PAHOERC use Ethical Review Committee on Research               | 
              | PAI-1 use Plasminogen Activator Inhibitor 1               | 
              | PAI-2 use Plasminogen Activator Inhibitor 2               | 
              | PAI-3 use Protein C Inhibitor               | 
              | Pain               | 
              | Pain Assessment use Pain Measurement               | 
              | Pain Centers use Pain Clinics               | 
              | Pain Clinics               | 
              | Pain Disorder use Somatoform Disorders               | 
              | Pain Indifference, Congenital use Pain Insensitivity, Congenital               | 
              | Pain Insensitivity with Anhidrosis, Congenital use Hereditary Sensory and Autonomic Neuropathies               | 
              | Pain Insensitivity, Congenital               | 
              | Pain Measurement               | 
              | Pain Perception               | 
              | Pain Receptors use Nociceptors               | 
              | Pain Relief Units use Pain Clinics               | 
              | Pain Syndrome Type I, Regional, Complex use Reflex Sympathetic Dystrophy               | 
              | Pain Syndromes, Regional Complex use Complex Regional Pain Syndromes               | 
              | Pain Threshold               | 
              | Pain, Facial use Facial Pain               | 
              | Pain, Intractable               | 
              | Pain, Menstrual use Dysmenorrhea               | 
              | Pain, Postoperative               | 
              | Pain, Referred               | 
              | Paint               | 
              | Paintbrush, Indian use Acanthaceae               | 
              | Painted Coral Snake use Elaps corallinus               | 
              | Painting Industry               | 
              | Paintings               | 
              | Pair Bond               | 
              | Paired Box Transcription Factors               | 
              | Paired-Associate Learning               | 
              | Pakistan               | 
              | Pakur use Ficus religiosa               | 
              | Palaemon use Palaemonidae               | 
              | Palaemonetes use Palaemonidae               | 
              | Palaemonidae               | 
              | Palaeognathae               | 
              | Palaquium               | 
              | Palatal Expansion Technique               | 
              | Palatal Muscles               | 
              | Palatal Neoplasms               | 
              | Palatal Obturators               | 
              | Palate               | 
              | Palate, Hard               | 
              | Palate, Soft               | 
              | Palatine Bone use Palate, Hard               | 
              | Palatine Tonsil               | 
              | Palatopharyngeal Incompetence use Velopharyngeal Insufficiency               | 
              | Palatopharyngeal Sphincter use Velopharyngeal Sphincter               | 
              | Palatopharyngeus use Pharyngeal Muscles               | 
              | Palau               | 
              | Paleodontology               | 
              | Paleography               | 
              | Paleontology               | 
              | Paleopathology               | 
              | Paleostriatum use Globus Pallidus               | 
              | Palestinians use Arabs               | 
              | Palicourea use Rubiaceae               | 
              | Palinuridae               | 
              | Palladium               | 
              | Palladium Metallicum               | 
              | Palliative Care               | 
              | Palliative Treatment use Palliative Care               | 
              | Pallidotomy               | 
              | Pallister-Hall Syndrome               | 
              | Pallor               | 
              | Palm Fat use Vegetable Fats               | 
              | Palm Oil               | 
              | Palm, Cycad use Cycas               | 
              | Palm, False Sago use Cycas               | 
              | Palm, Peach use Arecaceae               | 
              | Palm, Rattan use Calamus               | 
              | Palm-Leaf Reaction use Cervix Mucus               | 
              | Palmar Carpal Ligament use Volar Plate               | 
              | Palmar Ligaments use Volar Plate               | 
              | Palmar Plate use Volar Plate               | 
              | Palmer Index               | 
              | Palmitates               | 
              | Palmitic Acid               | 
              | Palmitic Acids               | 
              | Palmitoyl CoA use Palmitoyl Coenzyme A               | 
              | Palmitoyl CoA Deacylase use Palmitoyl-CoA Hydrolase               | 
              | Palmitoyl Coenzyme A               | 
              | Palmitoyl Coenzyme A Hydrolase use Palmitoyl-CoA Hydrolase               | 
              | Palmitoyl Thioesterase use Palmitoyl-CoA Hydrolase               | 
              | Palmitoyl-CoA Hydrolase               | 
              | Palmitoylation use Lipoylation               | 
              | Palmitoylcarnitine               | 
              | Palmitylcarnitine use Palmitoylcarnitine               | 
              | Palmoplantar Keratoderma use Keratoderma, Palmoplantar               | 
              | Palmoplantaris Pustulosis use Psoriasis               | 
              | Paloondo               | 
              | Palpation               | 
              | Palpebral Conjunctiva use Conjunctiva               | 
              | Palsy use Paralysis               | 
              | Palyam Virus               | 
              | Pambotano use Calliandra houstoni               | 
              | Pamphlets               | 
              | Pan American Center for Sanitary Engineering and Environmental Sciences               | 
              | Pan American Foot-and-Mouth Disease Center               | 
              | Pan American Health Organization               | 
              | Pan American Sanitary Conference               | 
              | Pan paniscus               | 
              | Pan troglodytes               | 
              | Panacea arvensis               | 
              | Panaeolus papilionaceus use Agaricus campanulatus               | 
              | Panaeolus sphinctrinus use Agaricus campanulatus               | 
              | PANAFTOSA use Pan American Foot-and-Mouth Disease Center               | 
              | Panama               | 
              | Panama Canal Zone               | 
              | Panamerican Information and Documentation Network on Sanitary Engineering and Environmental Sciences use Pan American Center for Sanitary Engineering and Environmental Sciences               | 
              | Panax               | 
              | Panax ginseng use Panax               | 
              | Panax notoginseng               | 
              | Panax quinquefolia use Ginseng (Homeopathy)               | 
              | Panax quinquefolius use Ginseng (Homeopathy)               | 
              | Panaxosides use Ginsenosides               | 
              | Pancoast Syndrome               | 
              | Pancreas               | 
              | Pancreas Transplantation               | 
              | Pancreas, Artificial               | 
              | Pancreas, Artificial Endocrine use Insulin Infusion Systems               | 
              | Pancreas, Endocrine use Islets of Langerhans               | 
              | Pancreas, Exocrine               | 
              | Pancreatectomy               | 
              | Pancreatic alpha Cells use Glucagon-Secreting Cells               | 
              | Pancreatic alpha-Amylases               | 
              | Pancreatic beta Cells use Insulin-Secreting Cells               | 
              | Pancreatic Cancer use Pancreatic Neoplasms               | 
              | Pancreatic Cholera use Vipoma               | 
              | Pancreatic Cyst               | 
              | Pancreatic delta Cells use Somatostatin-Secreting Cells               | 
              | Pancreatic Diseases               | 
              | Pancreatic Ductal Carcinoma use Carcinoma, Pancreatic Ductal               | 
              | Pancreatic Ducts               | 
              | Pancreatic Elastase               | 
              | Pancreatic Extracts               | 
              | Pancreatic Fistula               | 
              | Pancreatic Function Tests               | 
              | Pancreatic Hormone Receptors use Receptors, Pancreatic Hormone               | 
              | Pancreatic Hormones               | 
              | Pancreatic Insufficiency use Exocrine Pancreatic Insufficiency               | 
              | Pancreatic Islets use Islets of Langerhans               | 
              | Pancreatic Islets Transplantation use Islets of Langerhans Transplantation               | 
              | Pancreatic Juice               | 
              | Pancreatic Kallikrein use Tissue Kallikreins               | 
              | Pancreatic Necrosis Virus, Infectious use Infectious pancreatic necrosis virus               | 
              | Pancreatic Neoplasms               | 
              | Pancreatic Polypeptide               | 
              | Pancreatic Polypeptide-Secreting Cells               | 
              | Pancreatic Pseudocyst               | 
              | Pancreatic Secretory Trypsin Inhibitor, Kazal use Trypsin Inhibitor, Kazal Pancreatic               | 
              | Pancreatic Stellate Cells               | 
              | Pancreatic Stone Protein use Lithostathine               | 
              | Pancreatic Trypsin Secretory Inhibitor, Kazal use Trypsin Inhibitor, Kazal Pancreatic               | 
              | Pancreaticoduodenectomy               | 
              | Pancreaticojejunostomy               | 
              | Pancreatin               | 
              | Pancreatinum               | 
              | Pancreatitis               | 
              | Pancreatitis, Acute Necrotizing               | 
              | Pancreatitis, Alcoholic               | 
              | Pancreatitis, Chronic               | 
              | Pancreatitis, Graft               | 
              | Pancreatoduodenectomy use Pancreaticoduodenectomy               | 
              | Pancreatojejunostomy use Pancreaticojejunostomy               | 
              | Pancreatopeptidase use Pancreatic Elastase               | 
              | Pancrein use Pancreatinum               | 
              | Pancrelipase               | 
              | Pancreozymin use Cholecystokinin               | 
              | Pancreozymin Receptors use Receptors, Cholecystokinin               | 
              | Pancuronium               | 
              | Pancytopenia               | 
              | Pandalidae               | 
              | Pandalus use Pandalidae               | 
              | Pandanaceae               | 
              | Pandanus use Pandanaceae               | 
              | Pandas, Giant use Ursidae               | 
              | Pandas, Greater use Ursidae               | 
              | Pandas, Lesser use Ailuridae               | 
              | Pandemics               | 
              | Panencephalitis, Subacute Sclerosing use Subacute Sclerosing Panencephalitis               | 
              | Paneth Cells               | 
              | Panhypopituitarism use Hypopituitarism               | 
              | Panic               | 
              | Panic Attacks use Panic Disorder               | 
              | Panic Disorder               | 
              | Panicgrass use Panicum               | 
              | Panicovirus use Tombusviridae               | 
              | Panicum               | 
              | Panleukopenia, Feline use Feline Panleukopenia               | 
              | Panna               | 
              | Panniculitis               | 
              | Panniculitis, Lupus Erythematosus               | 
              | Panniculitis, Nodular Nonsuppurative               | 
              | Panniculitis, Peritoneal               | 
              | Panniculitis, Subacute Nodular Migratory use Panniculitis               | 
              | Panophthalmitis               | 
              | Panoramic Radiography use Radiography, Panoramic               | 
              | Pansporablastina               | 
              | Panstrongylus               | 
              | Pansy use Viola               | 
              | Pantetheine               | 
              | Panther Cap use Agaricus pantherinus               | 
              | Panthera               | 
              | Panthera leo use Lions               | 
              | Panthera tigris use Tigers               | 
              | Pantherine use Muscimol               | 
              | Pantoea               | 
              | Pantoea agglomerans use Pantoea               | 
              | Pantomography use Radiography, Panoramic               | 
              | Pantothenate Kinase-Associated Neurodegeneration               | 
              | Pantothenic Acid               | 
              | Panulirus use Palinuridae               | 
              | Panuveitis               | 
              | Papain               | 
              | Papal Cross Spider use Aranea diadema               | 
              | Papanicolaou Smear use Vaginal Smears               | 
              | Papaver               | 
              | Papaver cornicatum luteum use Chelidonium majus               | 
              | Papaver somniferum use Opium (Homeopathy)               | 
              | Papaveraceae               | 
              | Papaveretum use Opium               | 
              | Papaverine               | 
              | Papaverinum               | 
              | Papaya use Carica               | 
              | Papaya vulgaris use Asimina triloba               | 
              | Paper               | 
              | Paper Spurge use Euphorbia lathyris               | 
              | Paper Waste use Solid Waste Recipients               | 
              | Paperbark use Cajuputum               | 
              | Papillary Muscles               | 
              | Papilledema               | 
              | Papillitis, Optic use Papilledema               | 
              | Papilloma               | 
              | Papilloma Virus DNA Probes use DNA Probes, HPV               | 
              | Papilloma Virus, Shope use Cottontail rabbit papillomavirus               | 
              | Papilloma, Choroid Plexus               | 
              | Papilloma, Intraductal               | 
              | Papilloma, Inverted               | 
              | Papilloma, Shope use Tumor Virus Infections               | 
              | Papilloma, Squamous Cell use Papilloma               | 
              | Papillomatosis use Papilloma               | 
              | Papillomaviridae               | 
              | Papillomavirus E7 Proteins               | 
              | Papillomavirus Infections               | 
              | Papillomavirus sylvilagi use Cottontail rabbit papillomavirus               | 
              | Papillomavirus Vaccines               | 
              | Papillon-Leage and Psaume Syndrome use Orofaciodigital Syndromes               | 
              | Papillon-Lefevre Disease               | 
              | Papio               | 
              | Papio anubis               | 
              | Papio cynocephalus               | 
              | Papio hamadryas               | 
              | Papio papio               | 
              | Papio ursinus               | 
              | Papoose Root use Caulophyllum thalictroides               | 
              | PAPP-A use Pregnancy-Associated Plasma Protein-A               | 
              | Pappataci Fever use Phlebotomus Fever               | 
              | Paprika use Capsicum               | 
              | Papua New Guinea               | 
              | Papular Mucinosis use Scleromyxedema               | 
              | Papulosquamous Disorders use Skin Diseases, Papulosquamous               | 
              | PAR-1 Receptor use Receptor, PAR-1               | 
              | PAR-2 Receptor use Receptor, PAR-2               | 
              | para-Aminoazobenzene use p-Aminoazobenzene               | 
              | para-Aminobenzoic Acid use 4-Aminobenzoic Acid               | 
              | para-Aminohippuric Acid use p-Aminohippuric Acid               | 
              | para-Aminosalicylic Acid use Aminosalicylic Acid               | 
              | Para-Aortic Bodies               | 
              | para-Azobenzenearsonate use p-Azobenzenearsonate               | 
              | para-Bromdylamine use Brompheniramine               | 
              | para-Chloroamphetamine use p-Chloroamphetamine               | 
              | para-Chlorophenylalanine use Fenclonine               | 
              | para-Dihydroxybenzenes use Hydroquinones               | 
              | para-Fluorophenylalanine use p-Fluorophenylalanine               | 
              | para-Hydroxyamphetamine use p-Hydroxyamphetamine               | 
              | para-Hydroxybenzoate Hydroxylase use 4-Hydroxybenzoate-3-Monooxygenase               | 
              | para-Hydroxybenzoic Acids use Parabens               | 
              | para-Hydroxynorephedrine use p-Hydroxynorephedrine               | 
              | para-Hydroxyphenylpyruvate Hydroxylase use 4-Hydroxyphenylpyruvate Dioxygenase               | 
              | para-Hydroxyphenylpyruvate Oxidase use 4-Hydroxyphenylpyruvate Dioxygenase               | 
              | para-Octopamine use Octopamine               | 
              | Parabasalidea               | 
              | Parabens               | 
              | Parabiosis               | 
              | Paracentesis               | 
              | Paracentral Thalamic Nucleus use Intralaminar Thalamic Nuclei               | 
              | Paracentrotus               | 
              | Paracetamol use Acetaminophen               | 
              | Parachlamydiaceae use Chlamydiales               | 
              | Parachloramine use Meclizine               | 
              | Parachuting use Aviation               | 
              | Paracoccidioides               | 
              | Paracoccidioidomycosis               | 
              | Paracoccus               | 
              | Paracoccus denitrificans               | 
              | Paracoccus pantotrophus               | 
              | Paracolobactrum use Enterobacteriaceae               | 
              | Paracress use Spilanthes oleracea               | 
              | Paracrine Communication               | 
              | Paracrine Peptide Factors use Intercellular Signaling Peptides and Proteins               | 
              | Paracrine Protein Factors use Intercellular Signaling Peptides and Proteins               | 
              | Paracrine Signaling use Paracrine Communication               | 
              | Paradentium use Periodontium               | 
              | Paradoxical Extensor Reflex, Great Toe use Reflex, Babinski               | 
              | Paradoxical Sleep use Sleep, REM               | 
              | Parafascicular Thalamic Nucleus use Intralaminar Thalamic Nuclei               | 
              | Paraffin               | 
              | Paraffin Embedding               | 
              | Paraffin Jelly use Petrolatum               | 
              | Paraffinum               | 
              | Paraganglia, Chromaffin               | 
              | Paraganglia, Nonchromaffin               | 
              | Paraganglioma               | 
              | Paraganglioma, Carotid Body use Carotid Body Tumor               | 
              | Paraganglioma, Extra-Adrenal               | 
              | Paraganglioma, Gangliocytic use Paraganglioma               | 
              | Paraganglioma, Nonchromaffin use Paraganglioma, Extra-Adrenal               | 
              | Parageusia use Dysgeusia               | 
              | Paragonimiasis               | 
              | Paragonimus               | 
              | Paragonimus westermani               | 
              | Paragrapher               | 
              | Paraguay               | 
              | Parahemophilia use Factor V Deficiency               | 
              | Parahippocampal Gyrus               | 
              | Paraimmunoglobulinemias use Paraproteinemias               | 
              | Parainfluenza use Paramyxoviridae Infections               | 
              | Parainfluenza Vaccines               | 
              | Parainfluenza Virus 1, Human               | 
              | Parainfluenza Virus 2, Human               | 
              | Parainfluenza Virus 3, Bovine               | 
              | Parainfluenza Virus 3, Human               | 
              | Parainfluenza Virus 4, Human               | 
              | Parainfluenza Virus Infections use Paramyxoviridae Infections               | 
              | Parakeets               | 
              | Parakeratosis               | 
              | Parakeratosis Variegata use Parapsoriasis               | 
              | Paraldehyde               | 
              | Paralithodes use Anomura               | 
              | Parallax, Ocular use Vision Disparity               | 
              | Parallel Lagoons               | 
              | Paralyses, Familial Periodic               | 
              | Paralysis               | 
              | Paralysis Agitans use Parkinson Disease               | 
              | Paralysis, Bulbar use Bulbar Palsy, Progressive               | 
              | Paralysis, Hyperkalemic Periodic               | 
              | Paralysis, Hypokalemic Periodic use Hypokalemic Periodic Paralysis               | 
              | Paralysis, Lower Extremities use Paraplegia               | 
              | Paralysis, Obstetric               | 
              | Paralysis, Periodic, Hyperkalemic, Familial use Paralysis, Hyperkalemic Periodic               | 
              | Paralysis, Pseudobulbar use Pseudobulbar Palsy               | 
              | Paralysis, Respiratory Muscle use Respiratory Paralysis               | 
              | Paralysis, Sleep use Sleep Paralysis               | 
              | Paralytic Ileus use Intestinal Pseudo-Obstruction               | 
              | Paramagnetic Resonance use Electron Spin Resonance Spectroscopy               | 
              | Paramecium               | 
              | Paramecium aurelia               | 
              | Paramecium caudatum               | 
              | Paramecium tetraurelia               | 
              | Paramedical Personnel use Allied Health Personnel               | 
              | Paramedics use Allied Health Personnel               | 
              | Paramedics, Emergency use Emergency Medical Technicians               | 
              | Parameters               | 
              | Paramethasone               | 
              | Parametritis               | 
              | Paramorphan use Dihydromorphine               | 
              | Paramphistomata use Paramphistomatidae               | 
              | Paramphistomatidae               | 
              | Paramphistomum use Paramphistomatidae               | 
              | Paramyosin use Tropomyosin               | 
              | Paramyotonia Congenita use Myotonic Disorders               | 
              | Paramyxoviridae               | 
              | Paramyxoviridae Infections               | 
              | Paramyxovirinae               | 
              | Paramyxovirus 1, Avian use Newcastle disease virus               | 
              | Paramyxoviruses, Avian use Avulavirus               | 
              | Paranasal Sinus Diseases               | 
              | Paranasal Sinus Neoplasms               | 
              | Paranasal Sinus-Nasal Cavity Esthesioneuroblastoma use Esthesioneuroblastoma, Olfactory               | 
              | Paranasal Sinuses               | 
              | Paraneoplastic Autonomic Dysfunction use Paraneoplastic Syndromes, Nervous System               | 
              | Paraneoplastic Cerebellar Degeneration               | 
              | Paraneoplastic Cerebellar Degeneration, Anti-Yo-Associated use Paraneoplastic Cerebellar Degeneration               | 
              | Paraneoplastic Encephalomyelitis use Paraneoplastic Syndromes, Nervous System               | 
              | Paraneoplastic Endocrine Syndromes               | 
              | Paraneoplastic Limbic Encephalitis use Limbic Encephalitis               | 
              | Paraneoplastic Opsoclonus-Myoclonus Ataxia use Opsoclonus-Myoclonus Syndrome               | 
              | Paraneoplastic Peripheral Neuropathy use Paraneoplastic Polyneuropathy               | 
              | Paraneoplastic Polyneuropathy               | 
              | Paraneoplastic Syndromes               | 
              | Paraneoplastic Syndromes, Nervous System               | 
              | Paranoia use Paranoid Disorders               | 
              | Paranoid Behavior               | 
              | Paranoid Disorder, Shared use Shared Paranoid Disorder               | 
              | Paranoid Disorders               | 
              | Paranoid Personality Disorder               | 
              | Paranoid Psychoses use Paranoid Disorders               | 
              | Paranoid Schizophrenia use Schizophrenia, Paranoid               | 
              | Paraosmia use Olfaction Disorders               | 
              | Paraoxon               | 
              | Paraparesis               | 
              | Paraparesis, Spastic               | 
              | Paraparesis, Tropical Spastic               | 
              | Paraphenylendiaminum               | 
              | Paraphenylenum Diaminum use Paraphenylendiaminum               | 
              | Paraphilias               | 
              | Paraphimosis               | 
              | Paraphrenia, Involutional use Depressive Disorder, Major               | 
              | Paraplegia               | 
              | Paraplegia, Spastic use Paraplegia               | 
              | Parapoxvirus               | 
              | Paraproteinemias               | 
              | Paraproteins               | 
              | Parapsoriasis               | 
              | Parapsoriasis en Plaques use Parapsoriasis               | 
              | Parapsychology               | 
              | Paraquat               | 
              | Parascaris use Ascaridoidea               | 
              | Parasite Chain use Food Chain               | 
              | Parasite Egg Count               | 
              | Parasite-Host Relations use Host-Parasite Interactions               | 
              | Parasitemia               | 
              | Parasites               | 
              | Parasitic Diseases               | 
              | Parasitic Diseases, Animal               | 
              | Parasitic Eye Infections use Eye Infections, Parasitic               | 
              | Parasitic Infections, Central Nervous System use Central Nervous System Parasitic Infections               | 
              | Parasitic Intestinal Diseases use Intestinal Diseases, Parasitic               | 
              | Parasitic Liver Diseases use Liver Diseases, Parasitic               | 
              | Parasitic Lung Diseases use Lung Diseases, Parasitic               | 
              | Parasitic Pregnancy Complications use Pregnancy Complications, Parasitic               | 
              | Parasitic Sensitivity Tests               | 
              | Parasitic Skin Diseases use Skin Diseases, Parasitic               | 
              | Parasitic Worms use Helminths               | 
              | Parasiticides use Antiparasitic Agents               | 
              | Parasitological Analysis               | 
              | Parasitology               | 
              | Parasol Mushroom use Agaricus procerus               | 
              | Parasomnias               | 
              | Parasomnias, REM Sleep use REM Sleep Parasomnias               | 
              | Parasuicide use Self-Injurious Behavior               | 
              | Parasympathectomy               | 
              | Parasympathetic Denervation use Parasympathectomy               | 
              | Parasympathetic Fibers, Postganglionic               | 
              | Parasympathetic Ganglia use Ganglia, Parasympathetic               | 
              | Parasympathetic Nervous System               | 
              | Parasympathetic Nervous System Diseases use Autonomic Nervous System Diseases               | 
              | Parasympathetic-Blocking Agents use Parasympatholytics               | 
              | Parasympatholytics               | 
              | Parasympathomimetics               | 
              | Parasystole               | 
              | Paratenial Thalamic Nucleus use Midline Thalamic Nuclei               | 
              | Parathion               | 
              | Parathion Methyl use Methyl Parathion               | 
              | Parathormonum use Parathyreoidinum               | 
              | Parathyreoidinum               | 
              | Parathyroid Cancer use Parathyroid Neoplasms               | 
              | Parathyroid Diseases               | 
              | Parathyroid Glands               | 
              | Parathyroid Hormone               | 
              | Parathyroid Hormone Receptor 2 use Receptor, Parathyroid Hormone, Type 2               | 
              | Parathyroid Hormone Receptor Type 1 use Receptor, Parathyroid Hormone, Type 1               | 
              | Parathyroid Hormone Receptors use Receptors, Parathyroid Hormone               | 
              | Parathyroid Hormone-Related Protein               | 
              | Parathyroid Neoplasms               | 
              | Parathyroidectomy               | 
              | Paratopes use Binding Sites, Antibody               | 
              | Paratuberculosis               | 
              | Paratyphoid Fever               | 
              | Paratyphoid Vaccine use Typhoid-Paratyphoid Vaccines               | 
              | Paratyphoidinum               | 
              | Paravaccinia virus use Pseudocowpox virus               | 
              | Paraventricular Hypothalamic Nucleus               | 
              | Paraventricular Thalamic Nucleus use Midline Thalamic Nuclei               | 
              | parC Protein use DNA Topoisomerase IV               | 
              | parE Protein use DNA Topoisomerase IV               | 
              | Parechovirus               | 
              | Pareira brava               | 
              | Parent, Single use Single Parent               | 
              | Parent-Child Relations               | 
              | Parental Consent               | 
              | Parental Imprinting use Genomic Imprinting               | 
              | Parental Leave               | 
              | Parental Notification               | 
              | Parenteral Feeding use Parenteral Nutrition               | 
              | Parenteral Feeding, Home use Parenteral Nutrition, Home               | 
              | Parenteral Hyperalimentation use Parenteral Nutrition, Total               | 
              | Parenteral Infusions use Infusions, Parenteral               | 
              | Parenteral Nutrition               | 
              | Parenteral Nutrition Solutions               | 
              | Parenteral Nutrition, Home               | 
              | Parenteral Nutrition, Home Total               | 
              | Parenteral Nutrition, Total               | 
              | Parenterally-Transmitted Non-A, Non-B Hepatitis use Hepatitis C               | 
              | Parenting               | 
              | Parents               | 
              | Paresis               | 
              | Paresthesia               | 
              | Paretic Neurosyphilis use Neurosyphilis               | 
              | Pargyline               | 
              | Parietal Bone               | 
              | Parietal Cells, Gastric               | 
              | Parietal Lobe               | 
              | Parietal Peritoneum use Peritoneum               | 
              | Parietal Region Trauma use Craniocerebral Trauma               | 
              | Parietaria               | 
              | Parietaria officinalis               | 
              | Parilla, Yellow use Menispermum               | 
              | Parinaud Syndrome use Ocular Motility Disorders               | 
              | Paris               | 
              | Paris quadrifolia               | 
              | Parish Register use Civil Registration               | 
              | Parity               | 
              | Parking Facilities               | 
              | Parkinson Disease               | 
              | Parkinson Disease, Postencephalitic               | 
              | Parkinson Disease, Secondary               | 
              | Parkinsonian Disorders               | 
              | Parkinsonian Syndrome use Parkinsonian Disorders               | 
              | Parkinsonism use Parkinsonian Disorders               | 
              | Parkinsonism, Experimental use Parkinsonian Disorders               | 
              | Parkinsonism, Juvenile use Parkinsonian Disorders               | 
              | Parkinsonism, Viral Meningoencephalitic use Parkinson Disease, Postencephalitic               | 
              | Parks and Gardens use Green Areas               | 
              | Parliament use Legislative Power               | 
              | Parodontium use Periodontium               | 
              | Parodontosis use Periodontal Diseases               | 
              | Paromomycin               | 
              | Paronychia               | 
              | Paronychia illecebrum               | 
              | Parotid Cancer use Parotid Neoplasms               | 
              | Parotid Diseases               | 
              | Parotid Gland               | 
              | Parotid Neoplasms               | 
              | Parotid Region               | 
              | Parotidinum               | 
              | Parotitis               | 
              | Parotitis, Epidemic use Mumps               | 
              | Parovarian Cyst               | 
              | Paroxetine               | 
              | Paroxysmal Cold Hemoglobinuria use Hemoglobinuria, Paroxysmal               | 
              | Paroxysmal Hemicrania               | 
              | Paroxysmal Nerve Pain use Neuralgia               | 
              | Paroxysmal Nocturnal Hemoglobinuria use Hemoglobinuria, Paroxysmal               | 
              | Paroxysmal Sleep use Narcolepsy               | 
              | Parrots               | 
              | Pars Planitis               | 
              | Parshall Flume use Flowmeters               | 
              | Parshall Meters use Flowmeters               | 
              | Parsley use Petroselinum               | 
              | Parsnip yellow fleck virus use Sequivirus               | 
              | Parsnips use Pastinaca               | 
              | Parsonage-Turner Syndrome use Brachial Plexus Neuritis               | 
              | Parthenium hysterophorus               | 
              | Parthenocissus quinquefolia use Ampelopsis quinquefolia               | 
              | Parthenogenesis               | 
              | Partial Epilepsy use Epilepsies, Partial               | 
              | Partial Epilepsy, Motor use Epilepsy, Partial, Motor               | 
              | Partial Epilepsy, Sensory use Epilepsy, Partial, Sensory               | 
              | Partial Mastectomy use Mastectomy, Segmental               | 
              | Partial Monosomy use Chromosome Deletion               | 
              | Partial Pressure               | 
              | Partial Seizure Disorder use Epilepsies, Partial               | 
              | Partial Seizure Disorder, Motor use Epilepsy, Partial, Motor               | 
              | Partial Tetrasomy use Tetrasomy               | 
              | Partial Thromboplastin Time               | 
              | Partial Trisomy use Trisomy               | 
              | Participative Planning               | 
              | Particle Accelerators               | 
              | Particle Counting               | 
              | Particle Interactions, Elementary use Elementary Particle Interactions               | 
              | Particle Removal               | 
              | Particle Size               | 
              | Particle-Induced X-Ray Emission Spectrometry use Spectrometry, X-Ray Emission               | 
              | Particle-Mediated Epidermal Delivery of DNA use Biolistics               | 
              | Particles               | 
              | Particulate Matter               | 
              | Particulates use Particles               | 
              | Partner Abuse use Spouse Abuse               | 
              | Partner Notification use Contact Tracing               | 
              | Partnership in Health use Health Consortia               | 
              | Partnership Practice               | 
              | Partnership Practice, Dental               | 
              | Partridge Wood use Geoffroya vermifuga               | 
              | Partridgepea use Chamaecrista               | 
              | Parturient Paresis               | 
              | Parturition               | 
              | Parvalbumins               | 
              | Parvoviridae               | 
              | Parvoviridae Infections               | 
              | Parvovirinae               | 
              | Parvovirus               | 
              | Parvovirus B19, Human               | 
              | Parvovirus H-1 use H-1 parvovirus               | 
              | Parvovirus Infections use Parvoviridae Infections               | 
              | Parvovirus, Canine               | 
              | Parvovirus, Porcine               | 
              | Parvovirus, Raccoon use Parvovirus               | 
              | Parvovirus, Simian use Erythrovirus               | 
              | Parvoviruses, Insect use Densovirus               | 
              | PAS Reaction use Periodic Acid-Schiff Reaction               | 
              | Paspalum               | 
              | Pasqueflower use Pulsatilla               | 
              | Passeridae use Sparrows               | 
              | Passeriformes               | 
              | Passiflora               | 
              | Passiflora incarnata               | 
              | Passifloraceae               | 
              | Passion Flower use Passiflora               | 
              | Passionfruit use Passiflora               | 
              | Passive Addiction, Neonatal use Neonatal Abstinence Syndrome               | 
              | Passive Antibody Transfer use Immunization, Passive               | 
              | Passive Cutaneous Anaphylaxis               | 
              | Passive Motion Therapy, Continuous use Motion Therapy, Continuous Passive               | 
              | Passive Range of Motion use Range of Motion, Articular               | 
              | Passive Smoking use Tobacco Smoke Pollution               | 
              | Passive Transfer Experimental Autoimmune Myasthenia Gravis use Myasthenia Gravis, Autoimmune, Experimental               | 
              | Passive Transfer of Immunity use Immunization, Passive               | 
              | Passive Transfer Test use Intradermal Tests               | 
              | Passive-Aggressive Personality Disorder               | 
              | Passive-Dependent Personality use Dependent Personality Disorder               | 
              | Pastas               | 
              | Pastes use Ointments               | 
              | Pasteurella               | 
              | Pasteurella haemolytica use Mannheimia haemolytica               | 
              | Pasteurella Infections               | 
              | Pasteurella multocida               | 
              | Pasteurella pestis use Yersinia pestis               | 
              | Pasteurella pneumotropica               | 
              | Pasteurella tularensis use Francisella tularensis               | 
              | Pasteurellaceae               | 
              | Pasteurellaceae Infections               | 
              | Pasteurellosis use Pasteurella Infections               | 
              | Pasteurellosis, Pneumonic               | 
              | Pasteuria               | 
              | Pastille use Candies               | 
              | Pastinaca               | 
              | Pastinaca sativa               | 
              | Pastoral Care               | 
              | Pasture               | 
              | Patas Monkey use Erythrocebus patas               | 
              | Patch Tests               | 
              | Patch-Clamp Techniques               | 
              | Patella               | 
              | Patellar Dislocation               | 
              | Patellar Ligament               | 
              | Patellar Tendon use Patellar Ligament               | 
              | Patellofemoral Joint               | 
              | Patellofemoral Pain Syndrome               | 
              | Patency, Vascular use Vascular Patency               | 
              | Patent Ductus Arteriosus Familial use Ductus Arteriosus, Patent               | 
              | Patent Foramen Ovale use Foramen Ovale, Patent               | 
              | Patent Indicators               | 
              | Patent Medicines use Nonprescription Drugs               | 
              | Patents               | 
              | Patents as Topic               | 
              | Paternal Age               | 
              | Paternal Behavior               | 
              | Paternal Deprivation               | 
              | Paternal Exposure               | 
              | Paternal Messenger RNA use RNA, Messenger, Stored               | 
              | Paternalism               | 
              | Paternity               | 
              | Paternity Leave use Parental Leave               | 
              | Paterson Intestinalis Bacillus use Bacillus Bach-Paterson               | 
              | Patey Mastectomy use Mastectomy, Modified Radical               | 
              | Pathogen-Free Organisms use Specific Pathogen-Free Organisms               | 
              | Pathogenesy use Pathogenesy, Homeopathic               | 
              | Pathogenesy, Homeopathic               | 
              | Pathogenicity use Virulence               | 
              | Pathogenicity Factors use Virulence Factors               | 
              | Pathogenicity Islands use Genomic Islands               | 
              | Pathogens, Blood-Borne use Blood-Borne Pathogens               | 
              | Pathologic Processes               | 
              | Pathological Conditions, Anatomical               | 
              | Pathological Conditions, Signs and Symptoms               | 
              | Pathological Gambling use Gambling               | 
              | Pathological Waste use Medical Waste               | 
              | Pathology               | 
              | Pathology Department, Hospital               | 
              | Pathology, Clinical               | 
              | Pathology, Forensic use Forensic Pathology               | 
              | Pathology, Molecular               | 
              | Pathology, Oral               | 
              | Pathology, Surgical               | 
              | Pathology, Veterinary               | 
              | Patient Abandonment use Refusal to Treat               | 
              | Patient Acceptance of Health Care               | 
              | Patient Access to Records               | 
              | Patient Adherence use Patient Compliance               | 
              | Patient Admission               | 
              | Patient Advocacy               | 
              | Patient Agent use Proxy               | 
              | Patient Appointments use Appointments and Schedules               | 
              | Patient Care               | 
              | Patient Care Episodes use Episode of Care               | 
              | Patient Care Management               | 
              | Patient Care Planning               | 
              | Patient Care Team               | 
              | Patient Compliance               | 
              | Patient Cooperation use Patient Compliance               | 
              | Patient Credit and Collection               | 
              | Patient Data Privacy use Confidentiality               | 
              | Patient Discharge               | 
              | Patient Dropouts               | 
              | Patient Dumping use Patient Transfer               | 
              | Patient Education as Topic               | 
              | Patient Education Handout               | 
              | Patient Escort Service               | 
              | Patient Freedom of Choice Laws               | 
              | Patient Holding Stretchers use Stretchers               | 
              | Patient Identification Systems               | 
              | Patient Individualization use Constitutional Diagnosis               | 
              | Patient Isolation               | 
              | Patient Isolators               | 
              | Patient Monitoring use Monitoring, Physiologic               | 
              | Patient Moving and Lifting use Moving and Lifting Patients               | 
              | Patient Noncompliance use Patient Compliance               | 
              | Patient Ombudsmen use Patient Advocacy               | 
              | Patient Outcome Assessment use Outcome Assessment (Health Care)               | 
              | Patient Participation               | 
              | Patient Positioning               | 
              | Patient Preference               | 
              | Patient Protection and Affordable Care Act               | 
              | Patient Readmission               | 
              | Patient Records, Computerized use Health Records, Personal               | 
              | Patient Recruitment use Patient Selection               | 
              | Patient Refusal of Treatment use Treatment Refusal               | 
              | Patient Representatives use Patient Advocacy               | 
              | Patient Rights               | 
              | Patient Satisfaction               | 
              | Patient Schedules use Appointments and Schedules               | 
              | Patient Selection               | 
              | Patient Self-Determination Act               | 
              | Patient Simulation               | 
              | Patient Transfer               | 
              | Patient-Centered Care               | 
              | Patient-Centered Nursing use Patient-Centered Care               | 
              | Patient-Family Lodging use Housing               | 
              | Patient-Focused Care use Patient-Centered Care               | 
              | Patients               | 
              | Patients' Rooms               | 
              | Patients' Visitors use Visitors to Patients               | 
              | Patinopecten use Pectinidae               | 
              | Patrinia               | 
              | Pattern Recognition Receptors use Receptors, Pattern Recognition               | 
              | Pattern Recognition, Automated               | 
              | Pattern Recognition, Physiological               | 
              | Pattern Recognition, Visual               | 
              | Patulin               | 
              | Pau d'arco use Tabebuia               | 
              | Pauci-Immune Vasculitis use Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis               | 
              | Paucibacillary Leprosy use Leprosy, Paucibacillary               | 
              | Paul's Betony use Veronica officinalis               | 
              | Paul-Bunnell Antibodies use Antibodies, Heterophile               | 
              | Paul-Bunnell Antigens use Antigens, Heterophile               | 
              | Paullinia               | 
              | Paullinia cupana use Guarana (Homeopathy)               | 
              | Paullinia pinnata               | 
              | Paullinia sorbilis use Guarana (Homeopathy)               | 
              | Pausinystalia               | 
              | Pauson use Sanguinaria canadensis               | 
              | Pavor Nocturnus use Night Terrors               | 
              | Pawpaw use Asimina               | 
              | PAX2 Transcription Factor               | 
              | PAX7 Transcription Factor               | 
              | PAX9 Transcription Factor               | 
              | Paxillin               | 
              | PC1 Prohormone Convertase use Proprotein Convertase 1               | 
              | PC12 Cells               | 
              | PCA use Passive Cutaneous Anaphylaxis               | 
              | PCBs use Polychlorinated Biphenyls               | 
              | PCC Deficiency use Propionic Acidemia               | 
              | PCMB use p-Chloromercuribenzoic Acid               | 
              | PCMBS use 4-Chloromercuribenzenesulfonate               | 
              | PCNA use Proliferating Cell Nuclear Antigen               | 
              | PCP Abuse use Phencyclidine Abuse               | 
              | PCP Receptors use Receptors, Phencyclidine               | 
              | PCR use Polymerase Chain Reaction               | 
              | PD-ECGF use Thymidine Phosphorylase               | 
              | PDGF alpha Receptor use Receptor, Platelet-Derived Growth Factor alpha               | 
              | PDGF beta Receptor use Receptor, Platelet-Derived Growth Factor beta               | 
              | PDGF Receptors use Receptors, Platelet-Derived Growth Factor               | 
              | PDGF-R-alpha use Receptor, Platelet-Derived Growth Factor alpha               | 
              | PDGFB use Proto-Oncogene Proteins c-sis               | 
              | PDGFR beta use Receptor, Platelet-Derived Growth Factor beta               | 
              | PDH Phosphatase use Pyruvate Dehydrogenase (Lipoamide)-Phosphatase               | 
              | PDZ Domains               | 
              | Pea Plant, Pigeon use Cajanus               | 
              | Pea, Partridge use Chamaecrista               | 
              | Pea, Sensitive use Chamaecrista               | 
              | Peace Corps               | 
              | Peach use Prunus               | 
              | Peach Palm use Arecaceae               | 
              | Peach Tree use Amygdalus persica               | 
              | Peak Expiratory Flow Rate               | 
              | Peak Temperature use Maximum Temperature               | 
              | Peanut Agglutinin               | 
              | Peanut Allergy use Peanut Hypersensitivity               | 
              | Peanut Foods use Foods Containing Peanuts               | 
              | Peanut Hypersensitivity               | 
              | Peanut Lectin use Peanut Agglutinin               | 
              | Peanut-Containing Foods use Foods Containing Peanuts               | 
              | Peanut-Derived Food use Foods Containing Peanuts               | 
              | Peanuts use Arachis hypogaea               | 
              | Pears use Pyrus               | 
              | Peas               | 
              | Peashrub use Caragana               | 
              | Peat use Soil               | 
              | Peat Cutting Areas use Swamps               | 
              | Peat Therapy use Mud Therapy               | 
              | Peatlands use Swamps               | 
              | PECAM-1 use Antigens, CD31               | 
              | Pecan Tree use Carya               | 
              | Pecans use Carya               | 
              | PEComas use Perivascular Epithelioid Cell Neoplasms               | 
              | Pecten               | 
              | Pecten jacobaeus               | 
              | Pecten Oculi use Retinal Vessels               | 
              | Pectin Depolymerase use Polygalacturonase               | 
              | Pectinase use Polygalacturonase               | 
              | Pectinatus               | 
              | Pectinidae               | 
              | Pectins               | 
              | Pectobacterium               | 
              | Pectobacterium carotovorum               | 
              | Pectobacterium chrysanthemi               | 
              | Pectoral Nerves use Thoracic Nerves               | 
              | Pectoralis Muscles               | 
              | Pectus Excavatum use Funnel Chest               | 
              | Pedaliaceae               | 
              | Pediatric Assistants               | 
              | Pediatric Dentistry               | 
              | Pediatric Intensive Care Units use Intensive Care Units, Pediatric               | 
              | Pediatric Nursing               | 
              | Pediatric Psychology use Child Psychology               | 
              | Pediatrics               | 
              | Pedicularis               | 
              | Pedicularis canadensis               | 
              | Pediculosis use Lice Infestations               | 
              | Pediculus               | 
              | Pediculus capitis               | 
              | Pedicure and Manicure Services use Beauty and Aesthetics Centers               | 
              | Pedigree               | 
              | Pediococcus               | 
              | Pedodontics use Pediatric Dentistry               | 
              | Pedology use Edaphology               | 
              | Pedophilia               | 
              | Pedunculata use Thoracica               | 
              | Pedunculopontine Tegmental Nucleus               | 
              | PEEP use Positive-Pressure Respiration               | 
              | PEEP, Intrinsic use Positive-Pressure Respiration, Intrinsic               | 
              | PEEP, Occult use Positive-Pressure Respiration, Intrinsic               | 
              | Peepul Tree use Ficus religiosa               | 
              | Peer Group               | 
              | Peer Review               | 
              | Peer Review Organizations use Professional Review Organizations               | 
              | Peer Review, Grants use Peer Review, Research               | 
              | Peer Review, Health Care               | 
              | Peer Review, Publishing use Peer Review, Research               | 
              | Peer Review, Research               | 
              | Pefloxacin               | 
              | Pefudensovirus use Densovirinae               | 
              | Peganum               | 
              | Pejibaye use Arecaceae               | 
              | Pelargonium               | 
              | Pelargonium reniforme               | 
              | Pelger-Huet Anomaly               | 
              | Pelia berus use Vipera berus               | 
              | Pelican-Flower use Serpentaria aristolochia               | 
              | Peliosis Hepatis               | 
              | Pelizaeus-Merzbacher Disease               | 
              | Pellagra               | 
              | Pelletierinum               | 
              | Pellets, Drug use Drug Implants               | 
              | Pellitory use Parietaria               | 
              | Peloid Therapy use Mud Therapy               | 
              | Pelotherapy use Mud Therapy               | 
              | Pelvic Bones               | 
              | Pelvic Cancer use Pelvic Neoplasms               | 
              | Pelvic Exenteration               | 
              | Pelvic Floor               | 
              | Pelvic Horn Syndrome use Nail-Patella Syndrome               | 
              | Pelvic Infection               | 
              | Pelvic Inflammatory Disease               | 
              | Pelvic Neoplasms               | 
              | Pelvic Organ Prolapse               | 
              | Pelvic Pain               | 
              | Pelvic Plexus use Hypogastric Plexus               | 
              | Pelvic Pouches use Colonic Pouches               | 
              | Pelvimetry               | 
              | Pelvis               | 
              | Pemba use Indian Ocean Islands               | 
              | Pemoline               | 
              | Pemphigoid use Pemphigoid, Bullous               | 
              | Pemphigoid Gestationis               | 
              | Pemphigoid, Benign Mucous Membrane               | 
              | Pemphigoid, Bullous               | 
              | Pemphigoid, Cicatricial use Pemphigoid, Benign Mucous Membrane               | 
              | Pemphigus               | 
              | Pemphigus Vulgaris use Pemphigus               | 
              | Pemphigus, Benign Familial               | 
              | Pempidine               | 
              | Penaeidae               | 
              | Penaeus use Penaeidae               | 
              | Penal Centers use Prisons               | 
              | Penal Institutions use Prisons               | 
              | Penal Institutions Sanitation use Prison Sanitation               | 
              | Penalties for Environmental Damages               | 
              | Penbutolol               | 
              | Pendular Migration               | 
              | Pendular Nystagmus use Nystagmus, Pathologic               | 
              | Penetrance               | 
              | Penfluridol               | 
              | Penguins use Spheniscidae               | 
              | Penicillamine               | 
              | Penicillanic Acid               | 
              | Penicillic Acid               | 
              | Penicillin Acylase use Penicillin Amidase               | 
              | Penicillin Amidase               | 
              | Penicillin Amidohydrolase use Penicillin Amidase               | 
              | Penicillin G               | 
              | Penicillin G Benzathine               | 
              | Penicillin G Procaine               | 
              | Penicillin Resistance               | 
              | Penicillin V               | 
              | Penicillin, Aminobenzyl use Ampicillin               | 
              | Penicillin, Dimethoxyphenyl use Methicillin               | 
              | Penicillin, Methylphenylisoxazolyl use Oxacillin               | 
              | Penicillin, Phenoxymethyl use Penicillin V               | 
              | Penicillin-Binding Proteins               | 
              | Penicillinase               | 
              | Penicillins               | 
              | Penicillinum               | 
              | Penicillium               | 
              | Penicillium chrysogenum               | 
              | Penicillium notatum use Penicillium chrysogenum               | 
              | Peniculina               | 
              | Penile Cancer use Penile Neoplasms               | 
              | Penile Diseases               | 
              | Penile Erection               | 
              | Penile Implantation               | 
              | Penile Induration               | 
              | Penile Neoplasms               | 
              | Penile Prosthesis               | 
              | Penile Prosthesis Implantation use Penile Implantation               | 
              | Penis               | 
              | Penis, Artificial use Penile Prosthesis               | 
              | Peniseismic Zone               | 
              | Pennisetum               | 
              | Pennsylvania               | 
              | Pennyroyal, American False use Hedeoma               | 
              | Pennyroyal, European use Mentha pulegium               | 
              | Pensions               | 
              | Penstemon               | 
              | Pentachlorophenol               | 
              | Pentacyclic Triterpenes               | 
              | Pentadienes use Alkadienes               | 
              | Pentaerythritol Tetranicotinate use Niceritrol               | 
              | Pentaerythritol Tetranitrate               | 
              | Pentagastrin               | 
              | Pentalogy of Cantrell               | 
              | Pentamethylenetetrazole use Pentylenetetrazole               | 
              | Pentamidine               | 
              | Pentamidine Isethionate use Pentamidine               | 
              | Pentanes               | 
              | Pentanisia use Rubiaceae               | 
              | Pentanoates use Valerates               | 
              | Pentanoic Acids               | 
              | Pentanols               | 
              | Pentanones               | 
              | Pentanucleotide Repeats use Microsatellite Repeats               | 
              | Pentas use Rubiaceae               | 
              | Pentastomida               | 
              | Pentazocine               | 
              | Pentenes use Alkenes               | 
              | Pentetates use Pentetic Acid               | 
              | Pentetic Acid               | 
              | Pentetrazole use Pentylenetetrazole               | 
              | Penthanil use Pentetic Acid               | 
              | Penthiobarbital use Thiopental               | 
              | Penthorum sedoides               | 
              | Pentobarbital               | 
              | Pentolinium Tartrate               | 
              | Pentosan Polysulfate use Pentosan Sulfuric Polyester               | 
              | Pentosan Sulfuric Polyester               | 
              | Pentose Phosphate Pathway               | 
              | Pentose Phosphate Shunt use Pentose Phosphate Pathway               | 
              | Pentose Shunt use Pentose Phosphate Pathway               | 
              | Pentosephosphate Pathway use Pentose Phosphate Pathway               | 
              | Pentosephosphates               | 
              | Pentoses               | 
              | Pentostatin               | 
              | Pentosyltransferases               | 
              | Pentoxifylline               | 
              | Pentoxyl               | 
              | Pentoxyresorufin O-Dealkylase use Cytochrome P-450 CYP2B1               | 
              | Pentyl Alcohols use Pentanols               | 
              | Pentylenetetrazole               | 
              | Pentymal use Amobarbital               | 
              | Peony use Paeonia               | 
              | People with Disabilities use Disabled Persons               | 
              | People's Republic of China use China               | 
              | Peperomia               | 
              | Pepleomycin use Peplomycin               | 
              | Peplomycin               | 
              | Pepper Tree use Schinus molle               | 
              | Pepper, Ashanti use Piper               | 
              | Pepper, Cubeb use Piper               | 
              | Pepper, Jaborandi use Piper               | 
              | Peppercorn tree use Schinus molle               | 
              | Peppergrass use Lepidium sativum               | 
              | Peppermint use Mentha piperita               | 
              | Peppertree, Brazilian use Anacardiaceae               | 
              | Peppertree, California use Anacardiaceae               | 
              | Pepperweed use Lepidium sativum               | 
              | Pepperwort use Marsileaceae               | 
              | Pepsin use Pepsin A               | 
              | Pepsin A               | 
              | Pepsinogen use Pepsinogen A               | 
              | Pepsinogen 3, Group I use Pepsinogen A               | 
              | Pepsinogen 5, Group I use Pepsinogen A               | 
              | Pepsinogen A               | 
              | Pepsinogen B use Pepsinogens               | 
              | Pepsinogen C               | 
              | Pepsinogen I use Pepsinogen A               | 
              | Pepsinogen II use Pepsinogen C               | 
              | Pepsinogens               | 
              | Pepstatins               | 
              | Peptaibols               | 
              | Peptic Ulcer               | 
              | Peptic Ulcer Hemorrhage               | 
              | Peptic Ulcer Perforation               | 
              | Peptichemio               | 
              | Peptidase Inhibitors use Protease Inhibitors               | 
              | Peptidases use Peptide Hydrolases               | 
              | Peptide Biosynthesis               | 
              | Peptide Biosynthesis, Extra-Ribosomal use Peptide Biosynthesis, Nucleic Acid-Independent               | 
              | Peptide Biosynthesis, Non-Ribosomal use Peptide Biosynthesis, Nucleic Acid-Independent               | 
              | Peptide Biosynthesis, Nucleic Acid-Independent               | 
              | Peptide Biosynthesis, Ribosomal use Protein Biosynthesis               | 
              | Peptide Biosynthesis, Thiotemplate Mechanism use Peptide Biosynthesis, Nucleic Acid-Independent               | 
              | Peptide Chain Elongation, Translational               | 
              | Peptide Chain Initiation, Translational               | 
              | Peptide Chain Termination, Translational               | 
              | Peptide Chloromethyl Ketones use Amino Acid Chloromethyl Ketones               | 
              | Peptide Elongation Factor 1               | 
              | Peptide Elongation Factor 2               | 
              | Peptide Elongation Factor G               | 
              | Peptide Elongation Factor Tu               | 
              | Peptide Elongation Factors               | 
              | Peptide Fingerprinting use Peptide Mapping               | 
              | Peptide Fragments               | 
              | Peptide Histidine-Isoleucine use Peptide PHI               | 
              | Peptide Hormone Receptors use Receptors, Peptide               | 
              | Peptide Hormones               | 
              | Peptide Hydrolase Inhibitors use Protease Inhibitors               | 
              | Peptide Hydrolases               | 
              | Peptide Initiation Factor EIF-1 use Eukaryotic Initiation Factor-1               | 
              | Peptide Initiation Factor EIF-2 use Eukaryotic Initiation Factor-2               | 
              | Peptide Initiation Factor EIF-2B use Eukaryotic Initiation Factor-2B               | 
              | Peptide Initiation Factor EIF-3 use Eukaryotic Initiation Factor-3               | 
              | Peptide Initiation Factor EIF-4A use Eukaryotic Initiation Factor-4A               | 
              | Peptide Initiation Factor EIF-4E use Eukaryotic Initiation Factor-4E               | 
              | Peptide Initiation Factor EIF-4F use Eukaryotic Initiation Factor-4F               | 
              | Peptide Initiation Factor EIF-4G use Eukaryotic Initiation Factor-4G               | 
              | Peptide Initiation Factor EIF-5 use Eukaryotic Initiation Factor-5               | 
              | Peptide Initiation Factor IF-1 use Prokaryotic Initiation Factor-1               | 
              | Peptide Initiation Factor IF-2 use Prokaryotic Initiation Factor-2               | 
              | Peptide Initiation Factor IF-3 use Prokaryotic Initiation Factor-3               | 
              | Peptide Initiation Factors               | 
              | Peptide Initiation Factors, Eukaryotic use Eukaryotic Initiation Factors               | 
              | Peptide Initiation Factors, Prokaryotic use Prokaryotic Initiation Factors               | 
              | Peptide Library               | 
              | Peptide Mapping               | 
              | Peptide Nucleic Acids               | 
              | Peptide Peptidohydrolase Inhibitors use Protease Inhibitors               | 
              | Peptide Peptidohydrolases use Endopeptidases               | 
              | Peptide PHI               | 
              | Peptide PHM use Peptide PHI               | 
              | Peptide Receptors use Receptors, Peptide               | 
              | Peptide Receptors, Invertebrate use Receptors, Invertebrate Peptide               | 
              | Peptide Sequence Analysis use Sequence Analysis, Protein               | 
              | Peptide Synthases               | 
              | Peptide Synthetases use Peptide Synthases               | 
              | Peptide T               | 
              | Peptide Termination Factors               | 
              | Peptide Vaccines use Vaccines, Subunit               | 
              | Peptide YY               | 
              | Peptide-Methionine (R)-S-oxide Reductase use Methionine Sulfoxide Reductases               | 
              | Peptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine Amidase               | 
              | Peptides               | 
              | Peptides, Cyclic               | 
              | Peptidoglycan               | 
              | Peptidoglycan Glycosyltransferase               | 
              | Peptidomimetics               | 
              | Peptidyl Transferases               | 
              | Peptidyl Translocases use Peptidyl Transferases               | 
              | Peptidyl-Dipeptidase A               | 
              | Peptidyl-Prolyl cis-trans Isomerase A use Cyclophilin A               | 
              | Peptidyl-Prolyl cis-trans-Isomerase use Peptidylprolyl Isomerase               | 
              | Peptidylprolyl Isomerase               | 
              | Peptidyltransferase use Peptidyl Transferases               | 
              | Peptococcaceae               | 
              | Peptococcus               | 
              | Peptoids               | 
              | Peptones               | 
              | Peptostreptococcus               | 
              | Per Capita Income               | 
              | Peracetic Acid               | 
              | Perazine               | 
              | Perca use Perches               | 
              | Perception               | 
              | Perception, Social use Social Perception               | 
              | Perceptrons use Neural Networks (Computer)               | 
              | Perceptual Closure               | 
              | Perceptual Completion Phenomena use Perceptual Closure               | 
              | Perceptual Defense               | 
              | Perceptual Disorders               | 
              | Perceptual Disorders, Auditory use Auditory Perceptual Disorders               | 
              | Perceptual Distortion               | 
              | Perceptual Masking               | 
              | Perceptual Motor Performance use Psychomotor Performance               | 
              | Perch use Perches               | 
              | Perches               | 
              | Perchloric Acid               | 
              | Perchloroethylene use Tetrachloroethylene               | 
              | Percidae use Perches               | 
              | Perciformes               | 
              | Percolating Filters use Biological Filters               | 
              | Percolating Liquid               | 
              | Percolating Water use Percolating Liquid               | 
              | Percolation               | 
              | Percussion               | 
              | Percussion Drilling               | 
              | Percutaneous Administration use Administration, Cutaneous               | 
              | Percutaneous Atherectomy use Atherectomy               | 
              | Percutaneous Electric Nerve Stimulation use Transcutaneous Electric Nerve Stimulation               | 
              | Percutaneous Nephrolithotomy use Nephrostomy, Percutaneous               | 
              | Percutaneous Nephrostomy use Nephrostomy, Percutaneous               | 
              | Percutaneous Transluminal Angioplasty use Angioplasty               | 
              | Percutaneous Transluminal Coronary Angioplasty use Angioplasty, Balloon, Coronary               | 
              | Percutaneous Transluminal Laser Angioplasty use Angioplasty, Balloon, Laser-Assisted               | 
              | Percutaneous Ultrasonic Lithotripsy use Lithotripsy               | 
              | Perfluorocarbons use Fluorocarbons               | 
              | Perforant Pathway               | 
              | Perforating Fasciculus use Perforant Pathway               | 
              | Perforin               | 
              | Performance Appraisal, Employee use Employee Performance Appraisal               | 
              | Performance Evaluation [Equipment] use Performance Tests               | 
              | Performance Tests               | 
              | Performance-Enhancing Drugs use Performance-Enhancing Substances               | 
              | Performance-Enhancing Substances               | 
              | Perfume               | 
              | Perfumed Towelettes use Wet Wipes               | 
              | Perfumed Waters               | 
              | Perfusion               | 
              | Perfusion Cancer Chemotherapy, Regional use Chemotherapy, Cancer, Regional Perfusion               | 
              | Perfusion Imaging               | 
              | Perfusion Pumps use Infusion Pumps               | 
              | Perfusion Pumps, Implantable use Infusion Pumps, Implantable               | 
              | Perfusion, Pulsatile use Pulsatile Flow               | 
              | Pergolide               | 
              | Perhexiline               | 
              | Peri-Implantitis               | 
              | Periadenitis Mucosa Necrotica Recurrens use Stomatitis, Aphthous               | 
              | Perianal Gland Neoplasms use Anal Gland Neoplasms               | 
              | Perianal Glands               | 
              | Perianeurysmal Fibrosis, Inflammatory use Retroperitoneal Fibrosis               | 
              | Periaortitis, Chronic use Retroperitoneal Fibrosis               | 
              | Periapical Abscess               | 
              | Periapical Cyst use Radicular Cyst               | 
              | Periapical Diseases               | 
              | Periapical Granuloma               | 
              | Periapical Periodontitis               | 
              | Periapical Periodontitis, Chronic Nonsuppurative use Periapical Granuloma               | 
              | Periapical Periodontitis, Suppurative use Periapical Abscess               | 
              | Periapical Tissue               | 
              | Periaqueductal Gray               | 
              | Periarteritis Nodosa use Polyarteritis Nodosa               | 
              | Periarthritis               | 
              | Pericardial Cyst use Mediastinal Cyst               | 
              | Pericardial Effusion               | 
              | Pericardial Tamponade use Cardiac Tamponade               | 
              | Pericardial Window Techniques               | 
              | Pericardiectomy               | 
              | Pericardiocentesis               | 
              | Pericardiostomy use Pericardial Window Techniques               | 
              | Pericardiotomy use Pericardiectomy               | 
              | Pericarditis               | 
              | Pericarditis, Constrictive               | 
              | Pericarditis, Tuberculous               | 
              | Pericardium               | 
              | Pericementitis use Periodontitis               | 
              | Pericentriolar Region use Centrosome               | 
              | Pericoronitis               | 
              | Pericytes               | 
              | Peridinium use Dinoflagellida               | 
              | Peridural Injections use Injections, Epidural               | 
              | Perilene use Perylene               | 
              | Perilla               | 
              | Perilla frutescens               | 
              | Perilymph               | 
              | Perilymphatic Duct use Cochlear Aqueduct               | 
              | Perimeningeal Infections               | 
              | Perimenopausal Bone Loss use Osteoporosis, Postmenopausal               | 
              | Perimenopause               | 
              | Perinatal Care               | 
              | Perinatal Mortality               | 
              | Perinatal Nursing use Neonatal Nursing               | 
              | Perinatal Subarachnoid Hemorrhage use Subarachnoid Hemorrhage               | 
              | Perinatology               | 
              | Perindopril               | 
              | Perinephritis               | 
              | Perineum               | 
              | Perineurial Cysts use Tarlov Cysts               | 
              | Perineurioma use Nerve Sheath Neoplasms               | 
              | Perineurium use Peripheral Nerves               | 
              | Perineuronal Oligodendroglia use Oligodendroglia               | 
              | Perineuronal Satellite Cells use Satellite Cells, Perineuronal               | 
              | Perineuronal Satellite Oligodendroglia Cells use Oligodendroglia               | 
              | Periocular Dermatitis use Dermatitis, Perioral               | 
              | Period Analysis               | 
              | Period Circadian Proteins               | 
              | Period Effect               | 
              | Period, Neurologic Refractory use Refractory Period, Electrophysiological               | 
              | Periodic Abstinence use Natural Family Planning Methods               | 
              | Periodic Acid               | 
              | Periodic Acid-Schiff Reaction               | 
              | Periodic Alternating Nystagmus use Nystagmus, Pathologic               | 
              | Periodic Disease use Familial Mediterranean Fever               | 
              | Periodic Disease, Wolff's use Familial Mediterranean Fever               | 
              | Periodic Limb Movement Disorder use Nocturnal Myoclonus Syndrome               | 
              | Periodic Movement Disorder, Sleep use Nocturnal Myoclonus Syndrome               | 
              | Periodic Paralysis, Familial use Paralyses, Familial Periodic               | 
              | Periodical Index               | 
              | Periodicals               | 
              | Periodicals as Topic               | 
              | Periodicals Publishing, Dental use Journalism, Dental               | 
              | Periodicity               | 
              | Periodicity in Homeopathy use Modalities, Periodical               | 
              | Periodontal Abscess               | 
              | Periodontal Atrophy               | 
              | Periodontal Attachment Loss               | 
              | Periodontal Bone Loss use Alveolar Bone Loss               | 
              | Periodontal Cyst               | 
              | Periodontal Cyst, Apical use Radicular Cyst               | 
              | Periodontal Debridement               | 
              | Periodontal Diseases               | 
              | Periodontal Dressings               | 
              | Periodontal Epithelial Debridement use Subgingival Curettage               | 
              | Periodontal Guided Tissue Regeneration use Guided Tissue Regeneration, Periodontal               | 
              | Periodontal Index               | 
              | Periodontal Ligament               | 
              | Periodontal Pocket               | 
              | Periodontal Prosthesis               | 
              | Periodontal Resorption use Alveolar Bone Loss               | 
              | Periodontal Splints               | 
              | Periodontics               | 
              | Periodontitis               | 
              | Periodontitis, Acute Nonsuppurative use Periapical Periodontitis               | 
              | Periodontitis, Apical use Periapical Periodontitis               | 
              | Periodontitis, Apical, Chronic Nonsuppurative use Periapical Granuloma               | 
              | Periodontitis, Apical, Suppurative use Periapical Abscess               | 
              | Periodontitis, Juvenile use Aggressive Periodontitis               | 
              | Periodontitis, Prepubertal use Aggressive Periodontitis               | 
              | Periodontium               | 
              | Periodontium, Apical use Periapical Tissue               | 
              | Periodontosis use Aggressive Periodontitis               | 
              | Periods, Neurologic Refractory use Refractory Period, Electrophysiological               | 
              | Perioperative Care               | 
              | Perioperative Nursing               | 
              | Perioperative Period               | 
              | Perioral Dermatitis use Dermatitis, Perioral               | 
              | Periosteum               | 
              | Periostitis               | 
              | Periostitis, Alveolar use Dry Socket               | 
              | Peripartum Period               | 
              | Peripheral Angiopathies use Peripheral Vascular Diseases               | 
              | Peripheral Arterial Disease               | 
              | Peripheral Autoimmune Demyelinating Disease use Polyradiculoneuropathy               | 
              | Peripheral Autonomic Nervous System Diseases use Autonomic Nervous System Diseases               | 
              | Peripheral Blood Stem Cell Transplantation               | 
              | Peripheral Catheterization use Catheterization, Peripheral               | 
              | Peripheral Equipment, Computer use Computer Peripherals               | 
              | Peripheral Nerve Diseases use Peripheral Nervous System Diseases               | 
              | Peripheral Nerve Sheath Tumors use Nerve Sheath Neoplasms               | 
              | Peripheral Nerves               | 
              | Peripheral Nervous System               | 
              | Peripheral Nervous System Agents               | 
              | Peripheral Nervous System Diseases               | 
              | Peripheral Nervous System Lyme Disease use Lyme Neuroborreliosis               | 
              | Peripheral Nervous System Neoplasms               | 
              | Peripheral Neurofibromatosis use Neurofibromatosis 1               | 
              | Peripheral Neuropathies use Peripheral Nervous System Diseases               | 
              | Peripheral Neuropathy, Alcohol-Induced use Alcoholic Neuropathy               | 
              | Peripheral Neuropathy, Paraneoplastic use Paraneoplastic Polyneuropathy               | 
              | Peripheral Population use Suburban Population               | 
              | Peripheral Primitive Neuroectodermal Tumors use Neuroectodermal Tumors, Primitive, Peripheral               | 
              | Peripheral Resistance use Vascular Resistance               | 
              | Peripheral Stem Cell Transplantation use Peripheral Blood Stem Cell Transplantation               | 
              | Peripheral T-Cell Lymphoma use Lymphoma, T-Cell, Peripheral               | 
              | Peripheral Vascular Diseases               | 
              | Periphlebitis use Phlebitis               | 
              | Periphyton               | 
              | Periplaneta               | 
              | Periplaneta americana use Periplaneta               | 
              | Periplasm               | 
              | Periplasmic Binding Proteins               | 
              | Periplasmic Proteins               | 
              | Periploca               | 
              | Periploca graeca               | 
              | Periploca indica use Hemidesmus               | 
              | Periprosthetic Fractures               | 
              | Perishable Foods               | 
              | Perissodactyla               | 
              | Peristalsis               | 
              | Peristaltic Pumps, Implantable use Infusion Pumps, Implantable               | 
              | Peritoneal Cavity               | 
              | Peritoneal Dialysis               | 
              | Peritoneal Dialysis, Continuous Ambulatory               | 
              | Peritoneal Diseases               | 
              | Peritoneal Effusion use Ascitic Fluid               | 
              | Peritoneal Fibrosing Syndrome use Peritoneal Fibrosis               | 
              | Peritoneal Fibrosis               | 
              | Peritoneal Fluid use Ascitic Fluid               | 
              | Peritoneal Infusions use Infusions, Parenteral               | 
              | Peritoneal Irrigation use Peritoneal Lavage               | 
              | Peritoneal Lavage               | 
              | Peritoneal Macrophages use Macrophages, Peritoneal               | 
              | Peritoneal Neoplasms               | 
              | Peritoneal Sclerosis use Peritoneal Fibrosis               | 
              | Peritoneal Stomata               | 
              | Peritoneoscopes use Laparoscopes               | 
              | Peritoneoscopy use Laparoscopy               | 
              | Peritoneovenous Shunt               | 
              | Peritoneum               | 
              | Peritoneum, Parietal use Peritoneum               | 
              | Peritoneum, Visceral use Peritoneum               | 
              | Peritonitis               | 
              | Peritonitis, Chylous use Chylous Ascites               | 
              | Peritonitis, Tuberculous               | 
              | Peritonsillar Abscess               | 
              | Perivascular Epithelioid Cell Neoplasms               | 
              | Perivascular Oligodendroglia use Oligodendroglia               | 
              | Periventricular Leukomalacia use Leukomalacia, Periventricular               | 
              | Periventricular Nodular Heterotopia               | 
              | Periventricular Nuclei of Thalamus use Midline Thalamic Nuclei               | 
              | Periwinkle use Vinca               | 
              | Periwinkle, Madagascar use Catharanthus               | 
              | Permafrost               | 
              | Permanent Employees use Workers               | 
              | Permanent Vegetative State use Persistent Vegetative State               | 
              | Permanent Workers use Workers               | 
              | Permeability               | 
              | Permeability, Capillary use Capillary Permeability               | 
              | Permeability, Cell Membrane use Cell Membrane Permeability               | 
              | Permeability, Microvascular use Capillary Permeability               | 
              | Permeability, Tooth use Tooth Permeability               | 
              | Permeable Soils use Soil Permeability               | 
              | Permethrin               | 
              | Permissible Limits               | 
              | Permissiveness               | 
              | Permitted Level use Permissible Limits               | 
              | Perna               | 
              | Pernicious Vomiting of Pregnancy use Hyperemesis Gravidarum               | 
              | Perodicticus potto use Lorisidae               | 
              | Peromyscus               | 
              | Peroneal Muscular Atrophy use Charcot-Marie-Tooth Disease               | 
              | Peroneal Nerve               | 
              | Peroneal Neuropathies               | 
              | Peronospora               | 
              | Peroperative Care use Intraoperative Care               | 
              | Peroperative Complications use Intraoperative Complications               | 
              | Peroxidase               | 
              | Peroxidase-Antiperoxidase Complex Technique use Immunoenzyme Techniques               | 
              | Peroxidase-Labeled Antibody Technique use Immunoenzyme Techniques               | 
              | Peroxidases               | 
              | Peroxides               | 
              | Peroxiredoxin use Peroxiredoxins               | 
              | Peroxiredoxin VI               | 
              | Peroxiredoxins               | 
              | Peroxisomal Disorders               | 
              | Peroxisome Proliferator-Activated Receptors               | 
              | Peroxisome Proliferators               | 
              | Peroxisomes               | 
              | Peroxyacetic Acid use Peracetic Acid               | 
              | Peroxynitrite use Peroxynitrous Acid               | 
              | Peroxynitrous Acid               | 
              | Perphenazine               | 
              | Persea               | 
              | Persia               | 
              | Persian Cumin use Carum carvi               | 
              | Persian Empire use Persia               | 
              | Persian Gulf use Indian Ocean               | 
              | Persian Gulf Syndrome               | 
              | Persian Lilac use Melia azedarach               | 
              | Persian Walnut use Juglans regia               | 
              | Persimmon use Diospyros               | 
              | Persistent Common Atrioventricular Canal use Endocardial Cushion Defects               | 
              | Persistent Fetal Circulation Syndrome               | 
              | Persistent Hyaloid Artery use Persistent Hyperplastic Primary Vitreous               | 
              | Persistent Hyperinsulinemia Hypoglycemia of Infancy               | 
              | Persistent Hyperplastic Primary Vitreous               | 
              | Persistent Ostium Primum use Heart Septal Defects, Atrial               | 
              | Persistent Pollutants use Conservative Pollutants               | 
              | Persistent Pulmonary Hypertension of Newborn use Persistent Fetal Circulation Syndrome               | 
              | Persistent Vegetative State               | 
              | Personal Autonomy               | 
              | Personal Construct Theory               | 
              | Personal Digital Assistant use Computers, Handheld               | 
              | Personal Expenditures use Financing, Personal               | 
              | Personal Genetic Information use Genetic Privacy               | 
              | Personal Health Services               | 
              | Personal Hygiene               | 
              | Personal Hygiene Products               | 
              | Personal Liability use Liability, Legal               | 
              | Personal Narratives use Autobiography               | 
              | Personal Protection               | 
              | Personal Satisfaction               | 
              | Personal Space               | 
              | Personality               | 
              | Personality Assessment               | 
              | Personality Development               | 
              | Personality Disorder, Antisocial use Antisocial Personality Disorder               | 
              | Personality Disorder, Borderline use Borderline Personality Disorder               | 
              | Personality Disorder, Compulsive use Compulsive Personality Disorder               | 
              | Personality Disorder, Dependent use Dependent Personality Disorder               | 
              | Personality Disorder, Histrionic use Histrionic Personality Disorder               | 
              | Personality Disorder, Paranoid use Paranoid Personality Disorder               | 
              | Personality Disorder, Passive-Aggressive use Passive-Aggressive Personality Disorder               | 
              | Personality Disorder, Schizoid use Schizoid Personality Disorder               | 
              | Personality Disorder, Schizotypal use Schizotypal Personality Disorder               | 
              | Personality Disorders               | 
              | Personality Inventory               | 
              | Personality Tests               | 
              | Personality Type A use Type A Personality               | 
              | Personality, Hysterical use Histrionic Personality Disorder               | 
              | Personhood               | 
              | Personnel Administration, Hospital               | 
              | Personnel Delegation               | 
              | Personnel Discipline use Employee Discipline               | 
              | Personnel Downsizing               | 
              | Personnel Loyalty               | 
              | Personnel Management               | 
              | Personnel Management, Hospital use Personnel Administration, Hospital               | 
              | Personnel Recruitment use Personnel Selection               | 
              | Personnel Selection               | 
              | Personnel Staffing and Scheduling               | 
              | Personnel Staffing and Scheduling Information Systems               | 
              | Personnel Turnover               | 
              | Personnel, Hospital               | 
              | Personnel, Hospital, Organization and Administration use Personnel Administration, Hospital               | 
              | Persons               | 
              | Persons with Disabilities use Disabled Persons               | 
              | Persons With Hearing Impairments use Hearing Impaired Persons               | 
              | Persuasion use Persuasive Communication               | 
              | Persuasive Communication               | 
              | PERT use Critical Path Method               | 
              | Pertechnetate Sodium use Sodium Pertechnetate Tc 99m               | 
              | Perthes Disease use Legg-Perthes Disease               | 
              | Pertussigen use Pertussis Toxin               | 
              | Pertussinum               | 
              | Pertussis use Whooping Cough               | 
              | Pertussis Toxin               | 
              | Pertussis Vaccine               | 
              | Peru               | 
              | Peruvian Bark use Cinchona               | 
              | Peruvian Mastic use Schinus molle               | 
              | Peruvian Peppertree use Schinus molle               | 
              | Pervasive Child Development Disorders use Child Development Disorders, Pervasive               | 
              | Pervasive Development Disorders use Child Development Disorders, Pervasive               | 
              | Perylene               | 
              | Pes Cavus use Foot Deformities               | 
              | Pes Planus use Flatfoot               | 
              | Pessaries               | 
              | Pest Control               | 
              | Pest Control, Biological               | 
              | Pest Management use Pest Control               | 
              | Peste-des-Petits-Ruminants               | 
              | Peste-des-petits-ruminants virus               | 
              | Pesticide Exposure               | 
              | Pesticide Residues               | 
              | Pesticide Synergists               | 
              | Pesticide Utilization               | 
              | Pesticides               | 
              | Pestinum               | 
              | Pestivirus               | 
              | Pestivirus Infections               | 
              | Pet Facilitated Therapy use Animal Assisted Therapy               | 
              | PET Scan use Positron-Emission Tomography               | 
              | Pet Therapy use Animal Assisted Therapy               | 
              | Pet-Human Bonding use Bonding, Human-Pet               | 
              | Petasites               | 
              | Petasites fragrans use Tussilago fragans               | 
              | Petasites officinalis use Tussilago petasites               | 
              | Petechiae use Purpura               | 
              | Pethidine use Meperidine               | 
              | Petit Mal Epilepsy use Epilepsy, Absence               | 
              | Petit Mal Status use Status Epilepticus               | 
              | Petiveria alliacea use Petiveria tetrandra               | 
              | Petiveria tetrandra               | 
              | Petriellidium use Pseudallescheria               | 
              | Petrogale use Macropodidae               | 
              | Petrolatum               | 
              | Petrolatum, Liquid use Mineral Oil               | 
              | Petroleum               | 
              | Petroleum (Homeopathy)               | 
              | Petroleum Derivates use Petroleum Industry               | 
              | Petroleum Industry               | 
              | Petroleum Jelly use Petrolatum               | 
              | Petroleum Refineries use Petroleum Industry               | 
              | Petromyzon               | 
              | Petromyzon marinus use Petromyzon               | 
              | Petromyzontidae use Lampreys               | 
              | Petrosal Sinus Sampling               | 
              | Petroselinum               | 
              | Petroselinum sativum               | 
              | Petrosia               | 
              | Petrous Bone               | 
              | Petrous Pyramid use Petrous Bone               | 
              | Petrous Sinus Thrombosis use Sinus Thrombosis, Intracranial               | 
              | Pets               | 
              | Petty Morel use Aralia racemosa               | 
              | Petty Spurge use Euphorbia peplus               | 
              | Petunia               | 
              | Petuvirus use Caulimoviridae               | 
              | Peucedanum oreoselinum use Athamanta oreoselinum               | 
              | Peucedanum ostruthium use Imperatoria ostruthium               | 
              | Peumus               | 
              | Peutz-Jeghers Syndrome               | 
              | Peyer's Patches               | 
              | Peyote use Mescaline               | 
              | Peyote (Homeopatia) use Anhalonium lewinii               | 
              | Peyotl (Homeopathy) use Anhalonium lewinii               | 
              | Peyronie's Disease use Penile Induration               | 
              | PF 3 use Platelet Factor 3               | 
              | Pf1 Phage use Bacteriophage Pf1               | 
              | Pfaundler-Hurler Syndrome use Mucopolysaccharidosis I               | 
              | Pfeiffer Syndrome use Acrocephalosyndactylia               | 
              | Pfiesteria piscicida               | 
              | PG Analogs use Prostaglandins, Synthetic               | 
              | PGA use Prostaglandins A               | 
              | PGA Synthetic use Prostaglandins A, Synthetic               | 
              | PGB use Prostaglandins B               | 
              | PGD use Prostaglandins D               | 
              | PGD2 use Prostaglandin D2               | 
              | PGE use Prostaglandins E               | 
              | PGE Receptors use Receptors, Prostaglandin E               | 
              | PGE Synthetic use Prostaglandins E, Synthetic               | 
              | PGE1 use Alprostadil               | 
              | PGE2 use Dinoprostone               | 
              | PGE2 Receptors use Receptors, Prostaglandin E               | 
              | PGE2alpha use Dinoprostone               | 
              | PGF use Prostaglandins F               | 
              | PGF Synthetic use Prostaglandins F, Synthetic               | 
              | PGF2 use Dinoprost               | 
              | PGF2alpha use Dinoprost               | 
              | PGG use Prostaglandins G               | 
              | PGH Synthase use Prostaglandin-Endoperoxide Synthases               | 
              | PGH2 use Prostaglandin H2               | 
              | PGI2 use Epoprostenol               | 
              | PGI2 Receptor use Receptors, Epoprostenol               | 
              | PGX use Epoprostenol               | 
              | pH use Hydrogen-Ion Concentration               | 
              | pH Diminution use Acidification               | 
              | pH gradient use Proton-Motive Force               | 
              | pH Increase use Alkalinization               | 
              | pH Reduction use Acidification               | 
              | Ph1 Chromosome use Philadelphia Chromosome               | 
              | Phacochoerus use Swine               | 
              | Phacoemulsification               | 
              | Phacomatosis use Neurocutaneous Syndromes               | 
              | Phaeophyceae use Phaeophyta               | 
              | Phaeophyta               | 
              | Phage Attachment Sites use Attachment Sites, Microbiological               | 
              | Phage Display Peptide Library use Peptide Library               | 
              | Phage fd use Bacteriophage M13               | 
              | Phage G4 use Microvirus               | 
              | Phage IKe use Bacteriophage IKe               | 
              | Phage lambda use Bacteriophage lambda               | 
              | Phage M13 use Bacteriophage M13               | 
              | Phage MS2 use Levivirus               | 
              | Phage mu use Bacteriophage mu               | 
              | Phage mu 2 use Leviviridae               | 
              | Phage N4 use Bacteriophage N4               | 
              | Phage P1 use Bacteriophage P1               | 
              | Phage P2 use Bacteriophage P2               | 
              | Phage P22 use Bacteriophage P22               | 
              | Phage Pf1 use Bacteriophage Pf1               | 
              | Phage phi 105 use Bacillus Phages               | 
              | Phage phi 29 use Bacillus Phages               | 
              | Phage phi 6 use Bacteriophage phi 6               | 
              | Phage phi X 174 use Bacteriophage phi X 174               | 
              | Phage PRD1 use Bacteriophage PRD1               | 
              | Phage Q beta use Allolevivirus               | 
              | Phage Receptors use Receptors, Virus               | 
              | Phage T2 use Bacteriophage T4               | 
              | Phage T3 use Bacteriophage T3               | 
              | Phage T4 use Bacteriophage T4               | 
              | Phage T7 use Bacteriophage T7               | 
              | Phage Typing use Bacteriophage Typing               | 
              | Phages use Bacteriophages               | 
              | Phages T use T-Phages               | 
              | Phages, lambda-Like use Siphoviridae               | 
              | Phages, RNA use RNA Phages               | 
              | Phages, T5-Like use Siphoviridae               | 
              | Phages, T7-Like use Podoviridae               | 
              | Phagnalon use Asteraceae               | 
              | Phagocyte Bactericidal Dysfunction               | 
              | Phagocytes               | 
              | Phagocytosis               | 
              | Phagolysosomes use Phagosomes               | 
              | Phagosomes               | 
              | Phakic Intraocular Lenses               | 
              | Phakomatoses use Neurocutaneous Syndromes               | 
              | Phakomatosis, Bourneville use Tuberous Sclerosis               | 
              | Phakomatosis, Sturge-Weber use Sturge-Weber Syndrome               | 
              | Phalaenopsis use Orchidaceae               | 
              | Phalanger use Phalangeridae               | 
              | Phalangeridae               | 
              | Phalanges of Fingers use Finger Phalanges               | 
              | Phalanges of Toes use Toe Phalanges               | 
              | Phalaris               | 
              | Phalaris zizanioides use Anatherum muricatum               | 
              | Phallic Stage use Psychosexual Development               | 
              | Phalloidine               | 
              | Phallus impudicus               | 
              | Phaner use Cheirogaleidae               | 
              | Phanerochaete               | 
              | Phantom Limb               | 
              | Phantoms, Imaging               | 
              | Phantoms, Radiographic use Phantoms, Imaging               | 
              | Phantoms, Radiologic use Phantoms, Imaging               | 
              | Pharmaceutic Aids               | 
              | Pharmaceutic Aids (Preservatives) use Preservatives, Pharmaceutical               | 
              | Pharmaceutical Care               | 
              | Pharmaceutical Centers               | 
              | Pharmaceutical Centres use Pharmaceutical Centers               | 
              | Pharmaceutical Commerce use Pharmaceutical Trade               | 
              | Pharmaceutical Commercialization use Pharmaceutical Trade               | 
              | Pharmaceutical Drug Commerce use Pharmaceutical Trade               | 
              | Pharmaceutical Drug Commercialization use Pharmaceutical Trade               | 
              | Pharmaceutical Drug Trade use Pharmaceutical Trade               | 
              | Pharmaceutical Economics use Economics, Pharmaceutical               | 
              | Pharmaceutical Equivalents use Bioequivalent Drugs               | 
              | Pharmaceutical Management use Pharmacy Administration               | 
              | Pharmaceutical Policy use Drug and Narcotic Control               | 
              | Pharmaceutical Preparations               | 
              | Pharmaceutical Preparations (Homeopathy) use Homeopathic Vehicles               | 
              | Pharmaceutical Preparations, Dental               | 
              | Pharmaceutical Presentation (Homeopathy) use Homeopathic Vehicles               | 
              | Pharmaceutical Presentation Form (Homeopathy) use Homeopathic Vehicles               | 
              | Pharmaceutical Raw Material               | 
              | Pharmaceutical Services               | 
              | Pharmaceutical Solutions               | 
              | Pharmaceutical Trade               | 
              | Pharmaceutical Vehicles               | 
              | Pharmacies               | 
              | Pharmacists               | 
              | Pharmacists' Aides               | 
              | Pharmacodynamic Action of Homeopathic Drugs use Pharmacodynamic Action of Homeopathic Remedy               | 
              | Pharmacodynamic Action of Homeopathic Remedy               | 
              | Pharmacodynamics in Homeopathy use Pharmacodynamic Action of Homeopathic Remedy               | 
              | Pharmacoeconomics use Economics, Pharmaceutical               | 
              | Pharmacoepidemiology               | 
              | Pharmacogenetics               | 
              | Pharmacogenomics use Pharmacogenetics               | 
              | Pharmacognosy               | 
              | Pharmacokinetics               | 
              | Pharmacologic Actions               | 
              | Pharmacologic Processes use Pharmacological Processes               | 
              | Pharmacological Mechanisms of Action use Molecular Mechanisms of Pharmacological Action               | 
              | Pharmacological Phenomena               | 
              | Pharmacological Processes               | 
              | Pharmacology               | 
              | Pharmacology, Clinical               | 
              | Pharmacopeias, Homeopathic use Pharmacopoeias, Homeopathic               | 
              | Pharmacopoeias               | 
              | Pharmacopoeias as Topic               | 
              | Pharmacopoeias, Homeopathic               | 
              | Pharmacotherapy use Drug Therapy               | 
              | Pharmacy               | 
              | Pharmacy Administration               | 
              | Pharmacy and Therapeutics Committee               | 
              | Pharmacy Education use Education, Pharmacy               | 
              | Pharmacy Education, Continuing use Education, Pharmacy, Continuing               | 
              | Pharmacy Education, Graduate use Education, Pharmacy, Graduate               | 
              | Pharmacy Schools use Schools, Pharmacy               | 
              | Pharmacy Service, Clinical use Pharmacy Service, Hospital               | 
              | Pharmacy Service, Hospital               | 
              | Pharyngeal Arches use Branchial Region               | 
              | Pharyngeal Cancer use Pharyngeal Neoplasms               | 
              | Pharyngeal Diseases               | 
              | Pharyngeal Diverticulum use Zenker Diverticulum               | 
              | Pharyngeal Muscles               | 
              | Pharyngeal Neoplasms               | 
              | Pharyngeal Tonsils use Adenoids               | 
              | Pharyngectomy               | 
              | Pharyngitis               | 
              | Pharyngo-Conjunctival Fever use Adenovirus Infections, Human               | 
              | Pharyngoesophageal Diverticulum use Zenker Diverticulum               | 
              | Pharyngostomy               | 
              | Pharynx               | 
              | Phascolarctidae               | 
              | Phascolarctos cinereus use Phascolarctidae               | 
              | Phase Desynchronization, EEG use Electroencephalography Phase Synchronization               | 
              | Phase I Clinical Trials use Clinical Trials, Phase I as Topic               | 
              | Phase Synchronization, EEG use Electroencephalography Phase Synchronization               | 
              | Phase Transition               | 
              | Phase-Contrast Microscopy use Microscopy, Phase-Contrast               | 
              | Phaseolus               | 
              | Phaseolus nanus               | 
              | Phaseolus vulgaris use Phaseolus nanus               | 
              | Phaseolus vulgaris Lectins use Phytohemagglutinins               | 
              | Phases of Toxicity               | 
              | Phasmidia use Secernentea               | 
              | Phasmidia Infections use Secernentea Infections               | 
              | Pheasant's Eye use Adonis vernalis               | 
              | Phellandrium aquaticum               | 
              | Phellodendron               | 
              | Phelypressin use Felypressin               | 
              | PHEMA use Polyhydroxyethyl Methacrylate               | 
              | Phenacetin               | 
              | Phenacetin O-Dealkylase use Cytochrome P-450 CYP1A2               | 
              | Phenacetinum               | 
              | Phenalenes               | 
              | Phenanthrenes               | 
              | Phenanthridines               | 
              | Phenanthrolines               | 
              | Phenazine Methosulfate use Methylphenazonium Methosulfate               | 
              | Phenazines               | 
              | Phenazocine               | 
              | Phenazoline use Antazoline               | 
              | Phenazone use Antipyrine               | 
              | Phenazopyridine               | 
              | Phenbenzorphan use Phenazocine               | 
              | Phencyclidine               | 
              | Phencyclidine Abuse               | 
              | Phencyclidine Receptors use Receptors, Phencyclidine               | 
              | Phencyclidine-Related Disorders use Phencyclidine Abuse               | 
              | Phenelzine               | 
              | Phenemal use Phenobarbital               | 
              | Phenethanolamine N-Methyltransferase use Phenylethanolamine N-Methyltransferase               | 
              | Phenethyl Alcohol use Phenylethyl Alcohol               | 
              | Phenethylamines               | 
              | Phenethylazocine use Phenazocine               | 
              | Phenetidine               | 
              | Phenformin               | 
              | Phenindione               | 
              | Pheniramine               | 
              | Phenmetraline use Phenmetrazine               | 
              | Phenmetrazine               | 
              | Phenobarbital               | 
              | Phenobarbitalum               | 
              | Phenobarbitone use Phenobarbital               | 
              | Phenol               | 
              | Phenol Acids use Phenolic Compounds               | 
              | Phenol Red use Phenolsulfonphthalein               | 
              | Phenol Sulfotransferase use Arylsulfotransferase               | 
              | Phenolic Compounds               | 
              | Phenolic Content use Phenolic Compounds               | 
              | Phenolisatin use Oxyphenisatin Acetate               | 
              | Phenoloxidase use Monophenol Monooxygenase               | 
              | Phenolphthalein               | 
              | Phenolphthaleins               | 
              | Phenols               | 
              | Phenolsulfonphthalein               | 
              | Phenolum use Carbolicum Acidum               | 
              | Phenomenography use Learning               | 
              | Phenoperidine               | 
              | Phenopromin use Amphetamine               | 
              | Phenothiazines               | 
              | Phenotype               | 
              | Phenoxazole use Pemoline               | 
              | Phenoxyacetates               | 
              | Phenoxybenzamine               | 
              | Phenoxypropanolamines               | 
              | Phenprocoumalol use Phenprocoumon               | 
              | Phenprocoumarol use Phenprocoumon               | 
              | Phenprocoumon               | 
              | Phentanyl use Fentanyl               | 
              | Phentermine               | 
              | Phentolamine               | 
              | Phenyl Ethers               | 
              | Phenyl Mercury Compounds use Phenylmercury Compounds               | 
              | Phenylacetates               | 
              | Phenylalanine               | 
              | Phenylalanine Ammonia-Lyase               | 
              | Phenylalanine Hydroxylase               | 
              | Phenylalanine Hydroxylase Deficiency Disease use Phenylketonurias               | 
              | Phenylalanine Lysine Vasopressin use Felypressin               | 
              | Phenylalanine Mustard use Melphalan               | 
              | Phenylalanine-Specific tRNA use RNA, Transfer, Phe               | 
              | Phenylalanine-tRNA Ligase               | 
              | Phenylalanyl T RNA Synthetase use Phenylalanine-tRNA Ligase               | 
              | Phenylamines use Aniline Compounds               | 
              | Phenylammonium Compounds               | 
              | Phenylbarbital use Phenobarbital               | 
              | Phenylbutazone               | 
              | Phenylbutyrates               | 
              | Phenylcarbamates               | 
              | Phenylcarbamides use Phenylurea Compounds               | 
              | Phenylcarbinols use Benzyl Alcohols               | 
              | Phenylenediamines               | 
              | Phenylephrine               | 
              | Phenylethanol use Phenylethyl Alcohol               | 
              | Phenylethanolamine N-Methyltransferase               | 
              | Phenylethyl Alcohol               | 
              | Phenylethylamines use Phenethylamines               | 
              | Phenylethylmalonamide               | 
              | Phenylethylmalondiamide use Phenylethylmalonamide               | 
              | Phenylglyoxal               | 
              | Phenylhydrazines               | 
              | Phenylisohydantoin use Pemoline               | 
              | Phenylisopropyladenosine               | 
              | Phenylketonuria, Maternal               | 
              | Phenylketonurias               | 
              | Phenylmercurials use Phenylmercury Compounds               | 
              | Phenylmercuric Acetate               | 
              | Phenylmercury Compounds               | 
              | Phenylmethanols use Benzyl Alcohols               | 
              | Phenylmethylamine use Benzylamines               | 
              | Phenylmethylsulfonyl Fluoride               | 
              | Phenylphosphonothioic Acid, 2-Ethyl 2-(4-Nitrophenyl) Ester               | 
              | Phenylprenazone use Prenazone               | 
              | Phenylpropanolamine               | 
              | Phenylpropionates               | 
              | Phenylpropylhydroxycumarinum use Phenprocoumon               | 
              | Phenylpyruvic Acids               | 
              | Phenylsulfapyrazole use Sulfaphenazole               | 
              | Phenylthiazolylthiourea               | 
              | Phenylthiocarbamide use Phenylthiourea               | 
              | Phenylthiohydantoin               | 
              | Phenylthiourea               | 
              | Phenylurea Compounds               | 
              | Phenytoin               | 
              | Pheochromocytoma               | 
              | Pheochromocytoma Cell Line use PC12 Cells               | 
              | Pheochromocytoma, Extra-Adrenal use Pheochromocytoma               | 
              | Pheophytins               | 
              | Pheresis use Blood Component Removal               | 
              | Pheromones               | 
              | Pheromones, Human               | 
              | Pheromones, Sexual use Sex Attractants               | 
              | PHEX Phosphate Regulating Neutral Endopeptidase               | 
              | phi 6 Phage use Bacteriophage phi 6               | 
              | PHI Peptide use Peptide PHI               | 
              | phi X 174 Phage use Bacteriophage phi X 174               | 
              | Phialophora               | 
              | Phialophora gougerotii use Exophiala               | 
              | Phialophora jeanselmei use Exophiala               | 
              | Philadelphia               | 
              | Philadelphia Chromosome               | 
              | Philadelphus use Philadelphus coronarius               | 
              | Philadelphus coronarius               | 
              | Philanthropic Funds use Fund Raising               | 
              | Philately               | 
              | Philippines               | 
              | Philodendron               | 
              | Philology               | 
              | Philology, Classical               | 
              | Philology, Oriental               | 
              | Philology, Romance               | 
              | Philosophy               | 
              | Philosophy, Dental               | 
              | Philosophy, Medical               | 
              | Philosophy, Nursing               | 
              | Philtrum use Lip               | 
              | Phimosis               | 
              | Phlebitis               | 
              | Phlebography               | 
              | Phlebothrombosis use Venous Thrombosis               | 
              | Phlebotominae use Psychodidae               | 
              | Phlebotomus               | 
              | Phlebotomus Fever               | 
              | Phlebotomy               | 
              | Phlebovirus               | 
              | Phlegmasia Alba Dolens use Thrombophlebitis               | 
              | Phlegmon use Cellulitis               | 
              | Phleomycins               | 
              | Phleum               | 
              | Phleum pratense               | 
              | Phloem               | 
              | Phlomis               | 
              | Phloretin               | 
              | Phloretin-Glucosidase use Glycosylceramidase               | 
              | Phlorhizin               | 
              | Phlorizin Hydrolase use Glycosylceramidase               | 
              | Phlorizinum               | 
              | Phloroglucinol               | 
              | Phloxine B use Eosine I Bluish               | 
              | Phobia, School use Phobic Disorders               | 
              | Phobia, Social use Phobic Disorders               | 
              | Phobias use Phobic Disorders               | 
              | Phobic Disorders               | 
              | Phobic Neuroses use Phobic Disorders               | 
              | Phobos use Mars               | 
              | Phoca               | 
              | Phocine distemper virus use Distemper Virus, Phocine               | 
              | Phocoena               | 
              | Phocoenidae use Porpoises               | 
              | Phocomelia use Ectromelia               | 
              | Phodopus               | 
              | Phodopus campbelli use Phodopus               | 
              | Phodopus sungorus use Phodopus               | 
              | Phodopus sungorus campbelli use Phodopus               | 
              | Phoebe use Saturn               | 
              | Pholiota               | 
              | Phomin use Cytochalasin B               | 
              | Phonation               | 
              | Phonation Disorders use Dysphonia               | 
              | Phonetics               | 
              | Phonocardiography               | 
              | Phonological Impairments use Articulation Disorders               | 
              | Phonophoresis               | 
              | Phoradendron               | 
              | Phorate               | 
              | Phorbol 12,13-Dibutyrate               | 
              | Phorbol Esters               | 
              | Phorbol Myristate Acetate use Tetradecanoylphorbol Acetate               | 
              | Phorbols               | 
              | Phorias use Strabismus               | 
              | Phormium use Agavaceae               | 
              | Phosgene               | 
              | Phosmet               | 
              | Phosphamide use Dimethoate               | 
              | Phosphamidon               | 
              | Phosphatases use Phosphoric Monoester Hydrolases               | 
              | Phosphate Acetyltransferase               | 
              | Phosphate Fluoride, Acidulated use Acidulated Phosphate Fluoride               | 
              | Phosphate Transport Proteins               | 
              | Phosphate-Binding Proteins               | 
              | Phosphates               | 
              | Phosphates, Inorganic use Phosphates               | 
              | Phosphates, Organic use Phosphoric Acid Esters               | 
              | Phosphatidal Compounds use Plasmalogens               | 
              | Phosphatidate Phosphatase               | 
              | Phosphatidate Phosphohydrolase use Phosphatidate Phosphatase               | 
              | Phosphatides use Phospholipids               | 
              | Phosphatidic Acids               | 
              | Phosphatidyl-N-Methylethanolamine N-Methyltransferase               | 
              | Phosphatidylcholine-Sterol O-Acyltransferase               | 
              | Phosphatidylcholines               | 
              | Phosphatidylethanolamine Binding Protein               | 
              | Phosphatidylethanolamine N-Methyltransferase               | 
              | Phosphatidylethanolamines               | 
              | Phosphatidylglycerols               | 
              | Phosphatidylinositol 3-Kinase               | 
              | Phosphatidylinositol 3-Kinase, Class I use Class I Phosphatidylinositol 3-Kinases               | 
              | Phosphatidylinositol 3-Kinase, Class III use Class III Phosphatidylinositol 3-Kinases               | 
              | Phosphatidylinositol 3-Kinases               | 
              | Phosphatidylinositol 4,5-Diphosphate               | 
              | Phosphatidylinositol 4-Kinase use 1-Phosphatidylinositol 4-Kinase               | 
              | Phosphatidylinositol Diacylglycerol-Lyase               | 
              | Phosphatidylinositol Glycan use Glycosylphosphatidylinositols               | 
              | Phosphatidylinositol Phosphates               | 
              | Phosphatidylinositol Transfer Proteins use Phospholipid Transfer Proteins               | 
              | Phosphatidylinositol-3-OH Kinase use Phosphatidylinositol 3-Kinases               | 
              | Phosphatidylinositol-4-Phosphate 3-Kinase               | 
              | Phosphatidylinositols               | 
              | Phosphatidylserine Synthase use CDPdiacylglycerol-Serine O-Phosphatidyltransferase               | 
              | Phosphatidylserines               | 
              | Phosphenes               | 
              | Phosphines               | 
              | Phosphinic Acids               | 
              | Phosphinous Acids use Phosphorus Acids               | 
              | Phosphites               | 
              | Phospho-2-Keto-3-Deoxyheptonate Aldolase use 3-Deoxy-7-Phosphoheptulonate Synthase               | 
              | Phospho-Specific Antibodies use Antibodies, Phospho-Specific               | 
              | Phosphoacylase use Phosphate Acetyltransferase               | 
              | Phosphoadenosine Phosphosulfate               | 
              | Phosphoamino Acids               | 
              | Phosphocreatine               | 
              | Phosphodiesterase 3 Inhibitors               | 
              | Phosphodiesterase 4 Inhibitors               | 
              | Phosphodiesterase 5 Inhibitors               | 
              | Phosphodiesterase Antagonists use Phosphodiesterase Inhibitors               | 
              | Phosphodiesterase I               | 
              | Phosphodiesterase Inhibitors               | 
              | Phosphodiesterases use Phosphoric Diester Hydrolases               | 
              | Phosphoenolpyruvate               | 
              | Phosphoenolpyruvate Carboxykinase (ATP)               | 
              | Phosphoenolpyruvate Carboxykinase (GTP)               | 
              | Phosphoenolpyruvate Carboxylase               | 
              | Phosphoenolpyruvate Hexose Phosphotransferases use Phosphoenolpyruvate Sugar Phosphotransferase System               | 
              | Phosphoenolpyruvate Sugar Phosphotransferase System               | 
              | Phosphofructokinase-1               | 
              | Phosphofructokinase-1, Liver Type               | 
              | Phosphofructokinase-1, Muscle Type               | 
              | Phosphofructokinase-1, Type C               | 
              | Phosphofructokinase-2               | 
              | Phosphofructokinases               | 
              | Phosphogalactose Uridyl Transferase use UDPglucose-Hexose-1-Phosphate Uridylyltransferase               | 
              | Phosphoglucomutase               | 
              | Phosphogluconate Dehydrogenase               | 
              | Phosphoglucose Isomerase use Glucose-6-Phosphate Isomerase               | 
              | Phosphoglyceraldehyde Dehydrogenase use Glyceraldehyde-3-Phosphate Dehydrogenases               | 
              | Phosphoglycerate Dehydrogenase               | 
              | Phosphoglycerate Kinase               | 
              | Phosphoglycerate Mutase               | 
              | Phosphoglycerides use Glycerophospholipids               | 
              | Phosphoglyceromutase use Phosphoglycerate Mutase               | 
              | Phosphohexose Isomerase use Glucose-6-Phosphate Isomerase               | 
              | Phosphohydrolases use Phosphoric Monoester Hydrolases               | 
              | Phosphoinositide Phospholipase C               | 
              | Phosphoinositides use Phosphatidylinositols               | 
              | Phospholipase A2 Receptor use Receptors, Phospholipase A2               | 
              | Phospholipase B use Lysophospholipase               | 
              | Phospholipase C use Type C Phospholipases               | 
              | Phospholipase C beta               | 
              | Phospholipase C delta               | 
              | Phospholipase C gamma               | 
              | Phospholipase D               | 
              | Phospholipases               | 
              | Phospholipases A               | 
              | Phospholipases A1               | 
              | Phospholipases A2               | 
              | Phospholipases A2, Calcium-Independent               | 
              | Phospholipases A2, Cytosolic               | 
              | Phospholipases A2, Group I use Group I Phospholipases A2               | 
              | Phospholipases A2, Group IA use Group IA Phospholipases A2               | 
              | Phospholipases A2, Group IB use Group IB Phospholipases A2               | 
              | Phospholipases A2, Group II use Group II Phospholipases A2               | 
              | Phospholipases A2, Group III use Group III Phospholipases A2               | 
              | Phospholipases A2, Group IV use Group IV Phospholipases A2               | 
              | Phospholipases A2, Group V use Group V Phospholipases A2               | 
              | Phospholipases A2, Group VI use Group VI Phospholipases A2               | 
              | Phospholipases A2, Group X use Group X Phospholipases A2               | 
              | Phospholipases A2, Secretory               | 
              | Phospholipases, Type C use Type C Phospholipases               | 
              | Phospholipid Ethers               | 
              | Phospholipid Transfer Proteins               | 
              | Phospholipids               | 
              | Phosphomannose Isomerase use Mannose-6-Phosphate Isomerase               | 
              | Phosphomonoesterases use Phosphoric Monoester Hydrolases               | 
              | Phosphomutases use Phosphotransferases (Phosphomutases)               | 
              | Phosphonic Acids               | 
              | Phosphonoacetate use Phosphonoacetic Acid               | 
              | Phosphonoacetic Acid               | 
              | Phosphonoformate use Foscarnet               | 
              | Phosphonoformic Acid use Foscarnet               | 
              | Phosphonomycin use Fosfomycin               | 
              | Phosphonous Acids use Phosphorus Acids               | 
              | Phosphopeptide-Specific Antibodies use Antibodies, Phospho-Specific               | 
              | Phosphopeptides               | 
              | Phosphoprotein Phosphatase use Phosphoprotein Phosphatases               | 
              | Phosphoprotein Phosphatases               | 
              | Phosphoprotein Phosphohydrolase use Phosphoprotein Phosphatases               | 
              | Phosphoproteins               | 
              | Phosphopyruvate Dikinase use Pyruvate, Orthophosphate Dikinase               | 
              | Phosphopyruvate Hydratase               | 
              | Phosphoramide Mustards               | 
              | Phosphoranes               | 
              | Phosphorated Pesticides use Insecticides, Organophosphate               | 
              | Phosphoribosyl Pyrophosphate               | 
              | Phosphoribosyl Pyrophosphate Amidotransferase use Amidophosphoribosyltransferase               | 
              | Phosphoribosyl Pyrophosphate Synthetase use Ribose-Phosphate Pyrophosphokinase               | 
              | Phosphoribosyl-ATP Pyrophosphorylase use ATP Phosphoribosyltransferase               | 
              | Phosphoribosylaminoimidazolecarboxamide Formyltransferase               | 
              | Phosphoribosylanthranilate Pyrophosphorylase use Anthranilate Phosphoribosyltransferase               | 
              | Phosphoribosylglycinamide Formyltransferase               | 
              | Phosphoric Acid Esters               | 
              | Phosphoric Acids               | 
              | Phosphoric Diester Hydrolase Inhibitors use Phosphodiesterase Inhibitors               | 
              | Phosphoric Diester Hydrolases               | 
              | Phosphoric Monoester Hydrolases               | 
              | Phosphoric Triester Hydrolases               | 
              | Phosphoricum Acidum               | 
              | Phosphorothioate Oligonucleotides               | 
              | Phosphorous Acids               | 
              | Phosphorus               | 
              | Phosphorus (Homeopathy)               | 
              | Phosphorus Acids               | 
              | Phosphorus Albus use Phosphorus (Homeopathy)               | 
              | Phosphorus Compounds               | 
              | Phosphorus Cycle               | 
              | Phosphorus Hydrogenatus               | 
              | Phosphorus Isotopes               | 
              | Phosphorus Metabolism Disorders               | 
              | Phosphorus Muriaticus use Phosphorus Pentachloratus               | 
              | Phosphorus Pentachloratus               | 
              | Phosphorus Radioisotopes               | 
              | Phosphorus, Dietary               | 
              | Phosphorus-Oxygen Lyases               | 
              | Phosphorylase a               | 
              | Phosphorylase b               | 
              | Phosphorylase Kinase               | 
              | Phosphorylase Phosphatase               | 
              | Phosphorylases               | 
              | Phosphorylation               | 
              | Phosphorylation State-Specific Antibodies use Antibodies, Phospho-Specific               | 
              | Phosphorylcholine               | 
              | Phosphorylcholine Chloride use Phosphorylcholine               | 
              | Phosphorylcholine, Acetyl Glyceryl Ether use Platelet Activating Factor               | 
              | Phosphorylcholine-Glyceride Transferase use Diacylglycerol Cholinephosphotransferase               | 
              | Phosphoserine               | 
              | Phosphothreonine               | 
              | Phosphotransacetylase use Phosphate Acetyltransferase               | 
              | Phosphotransferases               | 
              | Phosphotransferases (Alcohol Group Acceptor)               | 
              | Phosphotransferases (Carboxyl Group Acceptor)               | 
              | Phosphotransferases (Nitrogenous Group Acceptor)               | 
              | Phosphotransferases (Other Substituted Phosphate Groups) use Transferases (Other Substituted Phosphate Groups)               | 
              | Phosphotransferases (Paired Acceptors)               | 
              | Phosphotransferases (Phosphate Group Acceptor)               | 
              | Phosphotransferases (Phosphomutases)               | 
              | Phosphotransferases, ATP use Phosphotransferases               | 
              | Phosphotriose Isomerase use Triose-Phosphate Isomerase               | 
              | Phosphotungstic Acid               | 
              | Phosphotyrosine               | 
              | Phosphotyrosine Phosphatase use Protein Tyrosine Phosphatases               | 
              | Phosvitin               | 
              | Photic Stimulation               | 
              | Photinia               | 
              | Photoaffinity Labels               | 
              | Photoaging of Skin use Skin Aging               | 
              | Photoallergy use Dermatitis, Photoallergic               | 
              | Photobacterium               | 
              | Photobiology               | 
              | Photobioreactors               | 
              | Photobleaching               | 
              | Photochemical Fog use Photochemical Smog               | 
              | Photochemical Processes               | 
              | Photochemical Smog               | 
              | Photochemistry               | 
              | Photochemotherapy               | 
              | Photochemotherapy, Extracorporeal use Photopheresis               | 
              | Photochemotherapy, Hematoporphyrin use Hematoporphyrin Photoradiation               | 
              | Photocoagulation use Light Coagulation               | 
              | Photocopying use Copying Processes               | 
              | Photodensitometry, X-Ray use Absorptiometry, Photon               | 
              | Photodermatitis use Photosensitivity Disorders               | 
              | Photodynamic Therapy use Photochemotherapy               | 
              | Photoelectron Spectrometry use Photoelectron Spectroscopy               | 
              | Photoelectron Spectroscopy               | 
              | Photofluorography               | 
              | Photogrammetry               | 
              | Photographic Industry               | 
              | Photographs               | 
              | Photography               | 
              | Photography, Dental               | 
              | Photography, Intraoral use Photography, Dental               | 
              | Photoinitiators, Dental               | 
              | Photokeratectomy use Corneal Surgery, Laser               | 
              | Photokymography use Electrokymography               | 
              | Photolysis               | 
              | Photometry               | 
              | Photomicrography               | 
              | Photon Absorptiometry use Absorptiometry, Photon               | 
              | Photons               | 
              | Photooxidation               | 
              | Photoperiod               | 
              | Photopheresis               | 
              | Photophobia               | 
              | Photophosphorylation               | 
              | Photopic Vision use Color Vision               | 
              | Photoplethysmography               | 
              | Photoproteins use Luminescent Proteins               | 
              | Photoradiation use Light               | 
              | Photoradiation Therapy use Phototherapy               | 
              | Photoradiation, Hematoporphyrin use Hematoporphyrin Photoradiation               | 
              | Photoreactivating Enzyme use Deoxyribodipyrimidine Photo-Lyase               | 
              | Photoreceptor Cells               | 
              | Photoreceptor Cells, Invertebrate               | 
              | Photoreceptor Cells, Vertebrate               | 
              | Photoreceptor Connecting Cilium               | 
              | Photoreceptors, Invertebrate use Photoreceptor Cells, Invertebrate               | 
              | Photoreceptors, Microbial               | 
              | Photoreceptors, Plant               | 
              | Photoreceptors, Rod use Retinal Rod Photoreceptor Cells               | 
              | Photorefractive Keratectomy               | 
              | Photorhabdus               | 
              | Photorhabdus luminescens use Photorhabdus               | 
              | Photosensitivity Disorders               | 
              | Photosensitizers use Photosensitizing Agents               | 
              | Photosensitizing Agents               | 
              | Photosmog use Photochemical Smog               | 
              | Photosynthesis               | 
              | Photosynthesis Lagoons use Aerobic Lagoons               | 
              | Photosynthetic Reaction Center Complex Proteins               | 
              | Photosystem I Protein Complex               | 
              | Photosystem I Reaction Center use Photosystem I Protein Complex               | 
              | Photosystem II Protein Complex               | 
              | Phototherapy               | 
              | Phototoxicity use Dermatitis, Phototoxic               | 
              | Phototrophic Processes               | 
              | Phototropins               | 
              | Phototropism               | 
              | Photovoltaic Cells use Solar Collectors               | 
              | Photovoltaic Energy               | 
              | Phrases               | 
              | Phreatic Water use Groundwaters               | 
              | Phrenic Nerve               | 
              | Phrenology               | 
              | Phthalamudine use Chlorthalidone               | 
              | Phthalazines               | 
              | Phthalic Acids               | 
              | Phthalic Anhydrides               | 
              | Phthalidyl Ampicillin use Talampicillin               | 
              | Phthalimides               | 
              | Phthalophos use Phosmet               | 
              | Phthiraptera               | 
              | Phthirus               | 
              | Phycobilins               | 
              | Phycobiliproteins               | 
              | Phycobilisomes               | 
              | Phycocyanin               | 
              | Phycodnaviridae               | 
              | Phycoerythrin               | 
              | Phycomyces               | 
              | Phycomycosis use Zygomycosis               | 
              | Phyllachorales               | 
              | Phyllanthus               | 
              | Phyllanthus emblica               | 
              | Phyllodes Tumor               | 
              | Phylloquinone use Vitamin K 1               | 
              | Phylloquinone Reductase use NAD(P)H Dehydrogenase (Quinone)               | 
              | Phylogeny               | 
              | Phylogeography               | 
              | Physalaemin               | 
              | Physalia pelagica               | 
              | Physalia physalis use Hydrozoa               | 
              | Physalis               | 
              | Physalis alkekengi               | 
              | Physaloptera use Spiruroidea               | 
              | Physarida               | 
              | Physarum               | 
              | Physarum polycephalum               | 
              | Physcomitrella use Bryopsida               | 
              | Physeter macrocephalus use Ambra grisea               | 
              | Physiatry use Physical Medicine               | 
              | Physical Activity use Motor Activity               | 
              | Physical Analysis               | 
              | Physical and Chemical Factors               | 
              | Physical and Chemical Properties               | 
              | Physical Chemistry Concepts use Physicochemical Phenomena               | 
              | Physical Chemistry Processes use Physicochemical Processes               | 
              | Physical Chromosome Mapping               | 
              | Physical Concepts use Physical Phenomena               | 
              | Physical Conditioning, Animal               | 
              | Physical Conditioning, Human use Physical Fitness               | 
              | Physical Constitution use Biotypology               | 
              | Physical Contaminants               | 
              | Physical Contamination               | 
              | Physical Education and Training               | 
              | Physical Effort use Physical Exertion               | 
              | Physical Endurance               | 
              | Physical Examination               | 
              | Physical Examination, Preadmission use Diagnostic Tests, Routine               | 
              | Physical Exertion               | 
              | Physical Fitness               | 
              | Physical Mapping (Genetics) use Physical Chromosome Mapping               | 
              | Physical Medicine               | 
              | Physical Oceanography               | 
              | Physical Phenomena               | 
              | Physical Planning               | 
              | Physical Processes               | 
              | Physical Properties               | 
              | Physical Sciences use Natural Science Disciplines               | 
              | Physical Stimulation               | 
              | Physical Therapy (Specialty)               | 
              | Physical Therapy Department, Hospital               | 
              | Physical Therapy Modalities               | 
              | Physically Challenged use Disabled Persons               | 
              | Physically Handicapped use Disabled Persons               | 
              | Physician Assignment Acceptance use Medicare Assignment               | 
              | Physician Assistants               | 
              | Physician Executives               | 
              | Physician Impairment               | 
              | Physician Incentive Plans               | 
              | Physician Payment Review Commission               | 
              | Physician Refusal to Treat use Refusal to Treat               | 
              | Physician Self-Referral               | 
              | Physician Shortage Area use Medically Underserved Area               | 
              | Physician's Practice Patterns               | 
              | Physician's Role               | 
              | Physician-Assisted Suicide use Suicide, Assisted               | 
              | Physician-Hospital Organizations use Hospital-Physician Joint Ventures               | 
              | Physician-Hospital Relations use Hospital-Physician Relations               | 
              | Physician-Nurse Relations               | 
              | Physician-Patient Relations               | 
              | Physicians               | 
              | Physicians Distribution               | 
              | Physicians' Assistants use Physician Assistants               | 
              | Physicians' Extenders use Physician Assistants               | 
              | Physicians' Offices               | 
              | Physicians, Family               | 
              | Physicians, Junior use Medical Staff, Hospital               | 
              | Physicians, Occupational Health use Occupational Health Physicians               | 
              | Physicians, Primary Care               | 
              | Physicians, Women               | 
              | Physicochemical Analysis               | 
              | Physicochemical Concepts use Physicochemical Phenomena               | 
              | Physicochemical Phenomena               | 
              | Physicochemical Processes               | 
              | Physicochemical Treatment               | 
              | Physics               | 
              | Physiognomy               | 
              | Physiography               | 
              | Physiologic Availability use Biological Availability               | 
              | Physiological Effects of Drugs               | 
              | Physiological Phenomena               | 
              | Physiological Processes               | 
              | Physiological Stress use Stress, Physiological               | 
              | Physiology               | 
              | Physiology, Comparative               | 
              | Physiotherapy (Specialty) use Physical Therapy (Specialty)               | 
              | Physiotherapy (Techniques) use Physical Therapy Modalities               | 
              | Physostigma               | 
              | Physostigma venenosum               | 
              | Physostigmine               | 
              | Physostigminum use Eserinum               | 
              | Phytanic Acid               | 
              | Phytanic Acid Storage Disease use Refsum Disease               | 
              | Phytic Acid               | 
              | Phytin use Phytic Acid               | 
              | Phytochelatins               | 
              | Phytochrome               | 
              | Phytochrome A               | 
              | Phytochrome B               | 
              | Phytoestrogens               | 
              | Phytohemagglutinins               | 
              | Phytohormones use Plant Growth Regulators               | 
              | Phytol               | 
              | Phytolacca               | 
              | Phytolacca americana               | 
              | Phytolacca berry               | 
              | Phytolacca decandra               | 
              | Phytolacca dodecandra               | 
              | Phytolacca vulgaris use Phytolacca decandra               | 
              | Phytolaccaceae               | 
              | Phytomenadione use Vitamin K 1               | 
              | Phytonadione use Vitamin K 1               | 
              | Phytophagineae use Plant Viruses               | 
              | Phytophthora               | 
              | Phytophthora infestans               | 
              | Phytoplankton               | 
              | Phytoplasma               | 
              | Phytoremediation use Biodegradation, Environmental               | 
              | Phytoreovirus use Reoviridae               | 
              | Phytosterols               | 
              | Phytotherapeutic Drugs               | 
              | Phytotherapy               | 
              | PI-3 Kinase use Phosphatidylinositol 3-Kinases               | 
              | pi-Mesons use Mesons               | 
              | Pia Mater               | 
              | Pial Vein use Cerebral Veins               | 
              | PIAS1 Protein Inhibitor of Activated STAT use Protein Inhibitors of Activated STAT               | 
              | Pica               | 
              | Pice use Disasters               | 
              | Picea               | 
              | Picea mariana use Abies nigra               | 
              | Picea nigra use Abies nigra               | 
              | Pichi use Fabiana imbricata               | 
              | Pichi-pichi use Fabiana imbricata               | 
              | Pichia               | 
              | Pichinde virus               | 
              | Picibanil               | 
              | Pick Disease of the Brain               | 
              | Pick's Disease of Heart use Pericarditis, Constrictive               | 
              | Pickles               | 
              | Pickwickian Syndrome use Obesity Hypoventilation Syndrome               | 
              | Picloram               | 
              | Picobirnavirus               | 
              | Picodnaviruses use Parvoviridae               | 
              | Picolines               | 
              | Picolinic Acids               | 
              | Picornaviridae               | 
              | Picornaviridae Infections               | 
              | Picornavirus Infections use Picornaviridae Infections               | 
              | Picrasma               | 
              | Picrates               | 
              | Picricum Acidum               | 
              | Picrophilus use Thermoplasmales               | 
              | Picrorhiza               | 
              | Picrotoxin               | 
              | Picrotoxinum               | 
              | Picryl Chloride               | 
              | Picrylsulfonic Acid use Trinitrobenzenesulfonic Acid               | 
              | Pictorial Works               | 
              | Picture Archiving and Communication Systems use Radiology Information Systems               | 
              | Picture Archiving, Radiologic use Radiology Information Systems               | 
              | Picture Frustration Study use Projective Techniques               | 
              | Pidolic Acid use Pyrrolidonecarboxylic Acid               | 
              | Piebald Dolphins use Dolphins               | 
              | Piebaldism               | 
              | Piedra               | 
              | Piercing, Body use Body Piercing               | 
              | Pierre Robin Syndrome               | 
              | Pig Skin Dressings use Biological Dressings               | 
              | Pig's Knee use Achyranthes calea               | 
              | Pig, Domestic use Sus scrofa               | 
              | Pig-Tailed Monkey use Macaca nemestrina               | 
              | Pigeon Breeder's Lung use Bird Fancier's Lung               | 
              | Pigeonpea Plant use Cajanus               | 
              | Pigeonpox Virus use Avipoxvirus               | 
              | Pigeons use Columbidae               | 
              | Pigment Epithelium of Eye               | 
              | Pigmentary Pallidal Degeneration use Pantothenate Kinase-Associated Neurodegeneration               | 
              | Pigmentary Retinopathy use Retinitis Pigmentosa               | 
              | Pigmentation               | 
              | Pigmentation Disorders               | 
              | Pigments use Pigments, Biological               | 
              | Pigments, Biological               | 
              | Pigs use Swine               | 
              | PII Nitrogen Regulatory Proteins               | 
              | Pijiguao use Arecaceae               | 
              | Pikas use Lagomorpha               | 
              | Pike use Esocidae               | 
              | Pilar Cyst use Epidermal Cyst               | 
              | Pili, Bacterial use Fimbriae, Bacterial               | 
              | Pili, Common use Fimbriae, Bacterial               | 
              | Pili, Conjugative use Pili, Sex               | 
              | Pili, Sex               | 
              | Pilin use Fimbriae Proteins               | 
              | Pill-pod Sandmat use Euphorbia pilulifera               | 
              | Pillpod Sandmat use Euphorbia pilulifera               | 
              | Pilocarpine               | 
              | Pilocarpinum               | 
              | Pilocarpus               | 
              | Pilocarpus microphyllus use Jaborandi               | 
              | Pilocarpus pennatifolius use Jaborandi               | 
              | Piloerection               | 
              | Pilomatrixoma               | 
              | Pilonidal Cyst use Pilonidal Sinus               | 
              | Pilonidal Sinus               | 
              | Pilot Lot of Drugs use Drug Samples               | 
              | Pilot Plants               | 
              | Pilot Projects               | 
              | Pilot Whales use Whales, Pilot               | 
              | pim-1 Proto-Oncogene Protein use Proto-Oncogene Proteins c-pim-1               | 
              | Pimaricin use Natamycin               | 
              | Pimelic Acids               | 
              | Pimenta               | 
              | Pimenta officinalis               | 
              | Pimiento use Capsicum               | 
              | Pimozide               | 
              | Pimpernel use Anagallis               | 
              | Pimpinella               | 
              | Pimpinella alba use Pimpinella saxifraga               | 
              | Pimpinella anisum use Pimpinella               | 
              | Pimpinella saxifraga               | 
              | Pinaceae               | 
              | Pinacidil               | 
              | Pinch Strength               | 
              | Pinctada               | 
              | Pindolol               | 
              | Pine Tree use Pinus               | 
              | Pine, Loblolly use Pinus taeda               | 
              | Pineal Body use Pineal Gland               | 
              | Pineal Gland               | 
              | Pineal Neoplasms use Pinealoma               | 
              | Pinealocytoma use Pinealoma               | 
              | Pinealoma               | 
              | Pineapple use Ananas               | 
              | Pineapple Guava use Feijoa               | 
              | Pineapple Weed use Matricaria               | 
              | Pinellia               | 
              | Pinemat Manzanita use Uva ursi (Homeopathy)               | 
              | Pineoblastoma use Pinealoma               | 
              | Pineocytoma use Pinealoma               | 
              | Pink Disease use Acrodynia               | 
              | Pink River Dolphin use Delphinus amazonicus               | 
              | Pinkroot use Spigelia marylandica               | 
              | Pinna, Ear use Ear Auricle               | 
              | Pinnipedia               | 
              | Pinnipeds use Pinnipedia               | 
              | Pinocytosis               | 
              | Pinta               | 
              | Pinus               | 
              | Pinus canadensis use Abies canadensis               | 
              | Pinus cupressus               | 
              | Pinus lambertiana               | 
              | Pinus nigra use Abies nigra               | 
              | Pinus ponderosa               | 
              | Pinus silvestris               | 
              | Pinus sylvestris               | 
              | Pinus taeda               | 
              | Pinworms use Enterobius               | 
              | Pions use Mesons               | 
              | Pipe Fitting use Plumbing (Environmental Health)               | 
              | Pipe Laying               | 
              | Pipe Networks use Sewerage               | 
              | Pipecolic Acids               | 
              | Pipecurium use Pipecuronium               | 
              | Pipecuronium               | 
              | Pipelines               | 
              | Pipemidic Acid               | 
              | Piper               | 
              | Piper angustifolium use Matico               | 
              | Piper betle               | 
              | Piper methysticum use Kava               | 
              | Piper methysticum (Homeopathy)               | 
              | Piper nigrum               | 
              | Piperaceae               | 
              | Piperacillin               | 
              | Piperamic Acid use Pipemidic Acid               | 
              | Piperazines               | 
              | Piperazinum               | 
              | Piperidines               | 
              | Piperidones               | 
              | Piperonyl Butoxide               | 
              | Piperoxan               | 
              | Pipes use Pipelines               | 
              | Pipidae               | 
              | Piping use Pipelines               | 
              | Pipobroman               | 
              | Pipsissewa use Chimaphila umbellata               | 
              | Piracetam               | 
              | Piracy               | 
              | Pirenzepine               | 
              | Piribedil               | 
              | Piribendyl use Piribedil               | 
              | Piriformis Muscle Syndrome               | 
              | Pirinitramide               | 
              | Piritramid use Pirinitramide               | 
              | Piritramide use Pirinitramide               | 
              | Piromidic Acid               | 
              | Piromonas use Piromyces               | 
              | Piromyces               | 
              | Piroplasma use Babesia               | 
              | Piroplasmia               | 
              | Piroplasmida               | 
              | Piroplasmosis use Babesiosis               | 
              | Piroxicam               | 
              | Pirul use Schinus molle               | 
              | Piscidia erythrina               | 
              | Piscirickettsia               | 
              | Piscirickettsiaceae               | 
              | Piscirickettsiaceae Infections               | 
              | Piscirickettsiosis use Piscirickettsiaceae Infections               | 
              | Pisiform Bone               | 
              | Pistachio use Pistacia               | 
              | Pistacia               | 
              | Pistia use Araceae               | 
              | Pistil use Flowers               | 
              | Piston Pumps use Positive Displacement Pumps               | 
              | Pisum sativum use Peas               | 
              | Pit and Fissure Sealants               | 
              | Pit Latrines use Latrines (Environmental Health)               | 
              | Pit Viper Venoms use Crotalid Venoms               | 
              | Pitcairn Island               | 
              | Pitch Discrimination               | 
              | Pitch Perception               | 
              | Pitcheri use Duboisia hopwoodi               | 
              | Pitcherplant use Sarraceniaceae               | 
              | Pitchuri Thornapple use Duboisia hopwoodi               | 
              | Pithecia use Pitheciidae               | 
              | Pitheciidae               | 
              | Pitheciinae use Pitheciidae               | 
              | Pithecolobium use Fabaceae               | 
              | Pitometry               | 
              | Pittosporaceae use Rosales               | 
              | Pittosporum use Rosales               | 
              | Pituitaria glandula               | 
              | Pituitarium posterium               | 
              | Pituitary ACTH Hypersecretion               | 
              | Pituitary Adenoma, ACTH-Secreting use ACTH-Secreting Pituitary Adenoma               | 
              | Pituitary Adenoma, GH-Secreting use Growth Hormone-Secreting Pituitary Adenoma               | 
              | Pituitary Adenoma, Prolactin-Secreting use Prolactinoma               | 
              | Pituitary Adenylate Cyclase-Activating Peptide Receptor Type I use Receptors, Pituitary Adenylate Cyclase-Activating Polypeptide, Type I               | 
              | Pituitary Adenylate Cyclase-Activating Peptide Receptor Type II use Receptors, Vasoactive Intestinal Polypeptide, Type I               | 
              | Pituitary Adenylate Cyclase-Activating Peptide Receptor Type III use Receptors, Vasoactive Intestinal Peptide, Type II               | 
              | Pituitary Adenylate Cyclase-Activating Peptide Receptors use Receptors, Pituitary Adenylate Cyclase-Activating Polypeptide               | 
              | Pituitary Adenylate Cyclase-Activating Polypeptide               | 
              | Pituitary Adrenocorticotropin-Secreting Cells use Corticotrophs               | 
              | Pituitary Apoplexy               | 
              | Pituitary Cancer use Pituitary Neoplasms               | 
              | Pituitary Corticotropin-Secreting Adenoma use ACTH-Secreting Pituitary Adenoma               | 
              | Pituitary Diencephalic Syndrome use Hypothalamic Diseases               | 
              | Pituitary Diseases               | 
              | Pituitary Dwarf use Dwarfism, Pituitary               | 
              | Pituitary Function Tests               | 
              | Pituitary Gland               | 
              | Pituitary Gland, Anterior               | 
              | Pituitary Gland, Intermediate               | 
              | Pituitary Gland, Posterior               | 
              | Pituitary Glycoprotein Hormone, alpha Subunit use Glycoprotein Hormones, alpha Subunit               | 
              | Pituitary Gonadotropin Receptors use Receptors, Gonadotropin               | 
              | Pituitary Growth Hormone use Growth Hormone               | 
              | Pituitary Growth Hormone-Secreting Adenoma use Growth Hormone-Secreting Pituitary Adenoma               | 
              | Pituitary Growth Hormone-Secreting Cells use Somatotrophs               | 
              | Pituitary Hormone Receptors use Receptors, Pituitary Hormone               | 
              | Pituitary Hormone Release Inhibiting Hormones               | 
              | Pituitary Hormone-Regulating Hormone Receptors use Receptors, Pituitary Hormone-Regulating Hormone               | 
              | Pituitary Hormone-Releasing Hormone Receptors use Receptors, Pituitary Hormone-Regulating Hormone               | 
              | Pituitary Hormone-Releasing Hormones               | 
              | Pituitary Hormones               | 
              | Pituitary Hormones, Anterior               | 
              | Pituitary Hormones, Posterior               | 
              | Pituitary Irradiation               | 
              | Pituitary Melanotropin-Producing Cells use Melanotrophs               | 
              | Pituitary Neoplasms               | 
              | Pituitary Prolactin-Secreting Cells use Lactotrophs               | 
              | Pituitary Stalk use Pituitary Gland               | 
              | Pituitary TSH-Secreting Cells use Thyrotrophs               | 
              | Pituitary-Adrenal Function Tests               | 
              | Pituitary-Adrenal System               | 
              | Pituitrin use Pituitary Hormones, Posterior               | 
              | Pituitrinum               | 
              | Pituri use Duboisia hopwoodi               | 
              | Pityriasis               | 
              | Pityriasis Lichenoides               | 
              | Pityriasis Lichenoides Chronica use Pityriasis Lichenoides               | 
              | Pityriasis Lichenoides et Varioliformis Acuta use Pityriasis Lichenoides               | 
              | Pityriasis Rosea               | 
              | Pityriasis Rubra Pilaris               | 
              | Pityriasis Versicolor use Tinea Versicolor               | 
              | Pityrosporum use Malassezia               | 
              | Pivampicillin               | 
              | Pivmecillinam use Amdinocillin Pivoxil               | 
              | Piwi-Interacting RNA use RNA, Small Interfering               | 
              | Pix Liquida               | 
              | Pizotifen use Pizotyline               | 
              | Pizotyline               | 
              | PKC Serine-Threonine Kinase use Protein Kinase C               | 
              | PKC-alpha Serine-Threonine Kinase use Protein Kinase C-alpha               | 
              | PKC-delta Serine-Threonine Kinase use Protein Kinase C-delta               | 
              | PL 104-191 use Health Insurance Portability and Accountability Act               | 
              | Placebo Effect               | 
              | Placebos               | 
              | Placenta               | 
              | Placenta Accreta               | 
              | Placenta Diseases               | 
              | Placenta Previa               | 
              | Placenta, Retained               | 
              | Placental Abruption use Abruptio Placentae               | 
              | Placental Anticoagulant Protein I use Annexin A5               | 
              | Placental Anticoagulant Protein II use Annexin A4               | 
              | Placental Anticoagulant Protein III use Annexin A3               | 
              | Placental Circulation               | 
              | Placental Extracts               | 
              | Placental Function Tests               | 
              | Placental Hormones               | 
              | Placental Insufficiency               | 
              | Placental Lactogen               | 
              | Placental Proteins use Pregnancy Proteins               | 
              | Placental Villi use Chorionic Villi               | 
              | Placental-Site Trophoblastic Tumor use Trophoblastic Tumor, Placental Site               | 
              | Placentation               | 
              | Placentoma, Normal use Placenta               | 
              | Placentome use Placenta               | 
              | Places for Smoking use Smoking Areas               | 
              | Placozoa               | 
              | Plagiarism               | 
              | Plagiocephaly               | 
              | Plagiocephaly, Nonsynostotic               | 
              | Plague               | 
              | Plague Vaccine               | 
              | Plaguicides Industry               | 
              | Plaice use Flounder               | 
              | Plain Sedimentation use Sedimentation               | 
              | Plakins               | 
              | Plakophilins               | 
              | Plakortis               | 
              | Plan Director of Civil Defense               | 
              | Planarians               | 
              | Planetary Evolution use Evolution, Planetary               | 
              | Planetoids use Minor Planets               | 
              | Planets               | 
              | Planets, Minor use Minor Planets               | 
              | Plankton               | 
              | Planned Parenthood use Family Planning (Public Health)               | 
              | Planning               | 
              | Planning systems use Planning               | 
              | Planning Techniques               | 
              | Planning Theories use Planning Techniques               | 
              | Planning, Health and Welfare use Health Planning               | 
              | Planning, Health Facility use Health Facility Planning               | 
              | Planococcaceae               | 
              | Planococcus Bacteria               | 
              | Planococcus Insect               | 
              | Plans               | 
              | Plans and Programs use Programming               | 
              | Plans and Programs of Education in Disasters               | 
              | Plant Antibodies, Recombinant use Plantibodies               | 
              | Plant Antigens use Antigens, Plant               | 
              | Plant Aril use Fruit               | 
              | Plant Bark               | 
              | Plant Beverage use Juices               | 
              | Plant Beverages use Juices               | 
              | Plant Capsule use Fruit               | 
              | Plant Components use Plant Structures               | 
              | Plant Components, Aerial               | 
              | Plant Creams               | 
              | Plant Diseases               | 
              | Plant DNA use DNA, Plant               | 
              | Plant Embryos use Seeds               | 
              | Plant Epidermis               | 
              | Plant Equipment               | 
              | Plant Extracts               | 
              | Plant Extracts, Chinese use Drugs, Chinese Herbal               | 
              | Plant Exudates               | 
              | Plant Galls use Plant Tumors               | 
              | Plant Gene Expression Regulation use Gene Expression Regulation, Plant               | 
              | Plant Genes use Genes, Plant               | 
              | Plant Genome use Genome, Plant               | 
              | Plant Growth Regulators               | 
              | Plant Gums               | 
              | Plant Hormones use Plant Growth Regulators               | 
              | Plant Immunity               | 
              | Plant Infertility               | 
              | Plant Juice use Juices               | 
              | Plant Juices use Juices               | 
              | Plant Leaves               | 
              | Plant Lectins               | 
              | Plant Lice use Aphids               | 
              | Plant Nectar               | 
              | Plant Oils               | 
              | Plant Physiological Phenomena               | 
              | Plant Physiological Processes               | 
              | Plant Physiology use Plant Physiological Phenomena               | 
              | Plant Poisoning               | 
              | Plant Preparations               | 
              | Plant Proteins               | 
              | Plant Proteins, Dietary use Vegetable Proteins               | 
              | Plant Purees use Plant Creams               | 
              | Plant RNA use RNA, Plant               | 
              | Plant Root Cap               | 
              | Plant Root Nodulation               | 
              | Plant Roots               | 
              | Plant Shoots               | 
              | Plant Somatic Embryogenesis Techniques               | 
              | Plant Stems               | 
              | Plant Sterols use Phytosterols               | 
              | Plant Stomata               | 
              | Plant Structures               | 
              | Plant Style use Flowers               | 
              | Plant Transpiration               | 
              | Plant Tubers               | 
              | Plant Tumor-Inducing Plasmids               | 
              | Plant Tumors               | 
              | Plant Vascular Bundle               | 
              | Plant Viral Movement Proteins               | 
              | Plant Viruses               | 
              | Plant Weeds               | 
              | Plant Zygotes use Seeds               | 
              | Plant-Lice from Chenopodium use Aphis Chenopodii Glauci               | 
              | Plantago               | 
              | Plantago major               | 
              | Plantago minor               | 
              | Plantago officinarum use Plantago major               | 
              | Plantain use Plantago               | 
              | Plantar Fasciitis use Fasciitis, Plantar               | 
              | Plantar Prints use Dermatoglyphics               | 
              | Plantar Ulcer use Foot Ulcer               | 
              | Plantaris Muscle use Muscle, Skeletal               | 
              | Plantation (area) use Agricultural Cultivation               | 
              | Plantation (produce) use Crops, Agricultural               | 
              | Plantibodies               | 
              | Planting use Agricultural Cultivation               | 
              | Plants               | 
              | Plants, Edible               | 
              | Plants, Genetically Modified               | 
              | Plants, Medicinal               | 
              | Plants, Salt-Tolerant use Salt-Tolerant Plants               | 
              | Plants, Toxic               | 
              | Plants, Transgenic use Plants, Genetically Modified               | 
              | Plaque Assay               | 
              | Plaque Therapy, Radioisotope use Brachytherapy               | 
              | Plaque, Amyloid               | 
              | Plaque, Atherosclerotic               | 
              | Plaques, Amyloid use Plaque, Amyloid               | 
              | Plasma               | 
              | Plasma Albumin use Serum Albumin               | 
              | Plasma Cell Antigens PC-1 use Antigens, Differentiation, B-Lymphocyte               | 
              | Plasma Cell Dyscrasias use Paraproteinemias               | 
              | Plasma Cell Granuloma use Granuloma, Plasma Cell               | 
              | Plasma Cell Granuloma, Pulmonary               | 
              | Plasma Cell Leukemia use Leukemia, Plasma Cell               | 
              | Plasma Cell Neoplasms use Neoplasms, Plasma Cell               | 
              | Plasma Cell Tumor use Plasmacytoma               | 
              | Plasma Cells               | 
              | Plasma Exchange               | 
              | Plasma Flow, Renal use Renal Plasma Flow               | 
              | Plasma Flow, Renal, Effective use Renal Plasma Flow, Effective               | 
              | Plasma Gases               | 
              | Plasma Kallikrein               | 
              | Plasma Membrane use Cell Membrane               | 
              | Plasma Membrane Calcium-Transporting ATPases               | 
              | Plasma Membrane Neurotransmitter Transport Proteins               | 
              | Plasma Prokallikrein use Prekallikrein               | 
              | Plasma Proteins use Blood Proteins               | 
              | Plasma Skin Regeneration               | 
              | Plasma Skin Rejuvenation use Plasma Skin Regeneration               | 
              | Plasma Skin Resurfacing use Plasma Skin Regeneration               | 
              | Plasma Substitutes               | 
              | Plasma Thromboplastin Antecedent use Factor XI               | 
              | Plasma Thromboplastin Component use Factor IX               | 
              | Plasma Transglutaminase use Factor XIIIa               | 
              | Plasma Volume               | 
              | Plasma Volume Expanders use Plasma Substitutes               | 
              | Plasmacytes use Plasma Cells               | 
              | Plasmacytic Leukemia use Leukemia, Plasma Cell               | 
              | Plasmacytoid Dendritic Cells use Dendritic Cells               | 
              | Plasmacytoma               | 
              | Plasmacytoma Growth Factor use Interleukin-6               | 
              | Plasmalogens               | 
              | Plasmapheresis               | 
              | Plasmids               | 
              | Plasmin use Fibrinolysin               | 
              | Plasminogen               | 
              | Plasminogen Activator Inhibitor 1               | 
              | Plasminogen Activator Inhibitor 2               | 
              | Plasminogen Activator Inhibitor 3 use Protein C Inhibitor               | 
              | Plasminogen Activator Inhibitors use Plasminogen Inactivators               | 
              | Plasminogen Activator, Tissue-Type use Tissue Plasminogen Activator               | 
              | Plasminogen Activator, Urokinase-Type use Urokinase-Type Plasminogen Activator               | 
              | Plasminogen Activators               | 
              | Plasminogen Inactivators               | 
              | Plasmodesmata               | 
              | Plasmodiophora use Plasmodiophorida               | 
              | Plasmodiophorida               | 
              | Plasmodium               | 
              | Plasmodium berghei               | 
              | Plasmodium chabaudi               | 
              | Plasmodium cynomolgi               | 
              | Plasmodium falciparum               | 
              | Plasmodium falciparum Malaria use Malaria, Falciparum               | 
              | Plasmodium gallinaceum               | 
              | Plasmodium Infections use Malaria               | 
              | Plasmodium knowlesi               | 
              | Plasmodium malariae               | 
              | Plasmodium ovale               | 
              | Plasmodium vivax               | 
              | Plasmodium vivax Malaria use Malaria, Vivax               | 
              | Plasmodium yoelii               | 
              | Plasmosome use Cell Nucleolus               | 
              | Plaster Casts use Casts, Surgical               | 
              | Plaster of Paris use Calcium Sulfate               | 
              | Plastic Bags for Blood Collection and Packing of Human Blood use Plastic Bags for Blood Preservation               | 
              | Plastic Bags for Blood Preservation               | 
              | Plastic Casts use Casts, Surgical               | 
              | Plastic Embedding               | 
              | Plastic Pipes use PVC Pipes               | 
              | Plastic Surgery use Surgery, Plastic               | 
              | Plasticity, Neuronal use Neuronal Plasticity               | 
              | Plasticizers               | 
              | Plastics               | 
              | Plastics Industry               | 
              | Plastids               | 
              | Plastocyanin               | 
              | Plastoquinol-Plastocyanin Reductase               | 
              | Plastoquinone               | 
              | Platanista use Dolphins               | 
              | Platanna use Xenopus laevis               | 
              | Platanus occidentalis               | 
              | Plate Sedimentation use Accelerated Sedimentation               | 
              | Platelet Activating Factor               | 
              | Platelet Activation               | 
              | Platelet Adhesiveness               | 
              | Platelet Aggregation               | 
              | Platelet Aggregation Inhibitors               | 
              | Platelet Alloantigens use Antigens, Human Platelet               | 
              | Platelet alpha-Granule Membrane Protein use P-Selectin               | 
              | Platelet Antagonists use Platelet Aggregation Inhibitors               | 
              | Platelet Antiaggregants use Platelet Aggregation Inhibitors               | 
              | Platelet Count               | 
              | Platelet Endothelial Cell Adhesion Molecule-1 use Antigens, CD31               | 
              | Platelet Factor 3               | 
              | Platelet Factor 4               | 
              | Platelet Function Tests               | 
              | Platelet Glycoprotein GPIb-IX Complex               | 
              | Platelet Glycoprotein GPIIb-IIIa Complex               | 
              | Platelet Glycoprotein IV use Antigens, CD36               | 
              | Platelet Membrane Glycoprotein Ib use Platelet Glycoprotein GPIb-IX Complex               | 
              | Platelet Membrane Glycoprotein IIb               | 
              | Platelet Membrane Glycoprotein IIIa use Integrin beta3               | 
              | Platelet Membrane Glycoprotein IIIb use Antigens, CD36               | 
              | Platelet Membrane Glycoprotein IX use Platelet Glycoprotein GPIb-IX Complex               | 
              | Platelet Membrane Glycoprotein V use Platelet Glycoprotein GPIb-IX Complex               | 
              | Platelet Membrane Glycoproteins               | 
              | Platelet Number use Platelet Count               | 
              | Platelet Storage Pool Deficiency               | 
              | Platelet Transforming Growth Factor use Transforming Growth Factor beta               | 
              | Platelet Transfusion               | 
              | Platelet-Activating Factor Hydrolase use 1-Alkyl-2-acetylglycerophosphocholine Esterase               | 
              | Platelet-Derived Endothelial Cell Growth Factor use Thymidine Phosphorylase               | 
              | Platelet-Derived Growth Factor               | 
              | Platelet-Derived Growth Factor alpha Receptor use Receptor, Platelet-Derived Growth Factor alpha               | 
              | Platelet-Derived Growth Factor B use Proto-Oncogene Proteins c-sis               | 
              | Platelet-Derived Growth Factor beta Receptor use Receptor, Platelet-Derived Growth Factor beta               | 
              | Platelet-Derived Growth Factor Receptors use Receptors, Platelet-Derived Growth Factor               | 
              | Platelet-Rich Plasma               | 
              | Platelet-Specific Antigens use Antigens, Human Platelet               | 
              | Plateletpheresis               | 
              | Platelets use Blood Platelets               | 
              | Platichthys use Flounder               | 
              | Platinum               | 
              | Platinum Black use Platinum               | 
              | Platinum Compounds               | 
              | Platinum Compounds, Inorganic use Platinum Compounds               | 
              | Platinum Diamminodichloride use Cisplatin               | 
              | Platinum Metallicum               | 
              | Platinum Muriaticum               | 
              | Platinum Muriaticum Natronatum               | 
              | Platybasia               | 
              | Platycodon               | 
              | Platyfish use Cyprinodontiformes               | 
              | Platyhelminths               | 
              | Platypus               | 
              | Platyrrhina use Cebidae               | 
              | Platyrrhini               | 
              | Play and Playthings               | 
              | Play Therapy               | 
              | Pleasure               | 
              | Pleasure-Pain Principle               | 
              | Plecoglossinae altivelis use Osmeriformes               | 
              | Plectin               | 
              | Plectonema               | 
              | Plectranthus               | 
              | Plectranthus fruticosus               | 
              | Plectrovirus               | 
              | Plegia use Paralysis               | 
              | Pleistophora               | 
              | Pleocytosis use Leukocytosis               | 
              | Pleoptics use Orthoptics               | 
              | Plerocercoid Larvae use Sparganum               | 
              | Plesiomonas               | 
              | Plesiomonas shigelloides use Plesiomonas               | 
              | Plethysmography               | 
              | Plethysmography, Impedance               | 
              | Plethysmography, Impedance, Transthoracic use Cardiography, Impedance               | 
              | Plethysmography, Whole Body               | 
              | Pleura               | 
              | Pleural Cavity               | 
              | Pleural Diseases               | 
              | Pleural Effusion               | 
              | Pleural Effusion, Malignant               | 
              | Pleural Endoscopy use Thoracoscopy               | 
              | Pleural Neoplasms               | 
              | Pleural Rub use Respiratory Sounds               | 
              | Pleurisy               | 
              | Pleurisy Root use Asclepias tuberosa               | 
              | Pleurisy, Tuberculous use Tuberculosis, Pleural               | 
              | Pleurobranchaea               | 
              | Pleurodeles               | 
              | Pleurodesis               | 
              | Pleurodynia Virus use Enterovirus B, Human               | 
              | Pleurodynia, Epidemic               | 
              | Pleuronectes use Flounder               | 
              | Pleuronectiformes use Flatfishes               | 
              | Pleuropneumonia               | 
              | Pleuropneumonia, Contagious               | 
              | Pleuropneumonia-Like Organisms use Mycoplasma               | 
              | Pleuroscopy use Thoracoscopy               | 
              | Pleurotus               | 
              | Plexus Coeliacus use Celiac Plexus               | 
              | Pliability               | 
              | Plicamycin               | 
              | Plocamium               | 
              | Ploidies               | 
              | Plotosus use Catfishes               | 
              | Plugs, Surgical use Surgical Instruments               | 
              | Plum use Prunus               | 
              | Plum Pox Virus               | 
              | Plum tree use Prunus domestica               | 
              | Plum, Waika use Clusiaceae               | 
              | Plumbaginaceae               | 
              | Plumbago use Plumbaginaceae               | 
              | Plumbago litteralis               | 
              | Plumbing use Sanitary Engineering               | 
              | Plumbing (Environmental Health)               | 
              | Plumbing Accessories               | 
              | Plumbism, Nervous System use Lead Poisoning, Nervous System               | 
              | Plumbism, Neurologic use Lead Poisoning, Nervous System               | 
              | Plumbism, Neurologic, Adult use Lead Poisoning, Nervous System, Adult               | 
              | Plumbism, Neurologic, Childhood use Lead Poisoning, Nervous System, Childhood               | 
              | Plumbum Aceticum               | 
              | Plumbum Carbonicum               | 
              | Plumbum Chromicum               | 
              | Plumbum Iodatum               | 
              | Plumbum Metallicum               | 
              | Plumbum Nitricum               | 
              | Plumbum Phosphoricum               | 
              | Plume Bush use Humea elegans               | 
              | Plumeria use Apocynaceae               | 
              | Plumeria celinus               | 
              | Plumes use Feathers               | 
              | Plummer-Vinson Syndrome               | 
              | Pluralism use Cultural Diversity               | 
              | Pluralism (Homeopathy)               | 
              | Pluripotent Stem Cells               | 
              | Plus Method               | 
              | Pluto               | 
              | Plutoids use Minor Planets               | 
              | Plutonium               | 
              | Pluviometry               | 
              | PM2 Bacteriophage use Corticoviridae               | 
              | PMMA use Polymethyl Methacrylate               | 
              | PMN Elastase use Leukocyte Elastase               | 
              | PMP use Probable Maximum Precipitation               | 
              | PNET use Neuroectodermal Tumors, Primitive               | 
              | Pneumatic Compression Stockings use Intermittent Pneumatic Compression Devices               | 
              | Pneumatic Suits use Gravity Suits               | 
              | Pneumatic Systems use Pressure Systems               | 
              | Pneumatosis Cystoides Intestinalis               | 
              | Pneumocephalus               | 
              | Pneumocephalus, Tension use Pneumocephalus               | 
              | Pneumococcal Infections               | 
              | Pneumococcal Polysaccharide Vaccine use Pneumococcal Vaccines               | 
              | Pneumococcal Vaccines               | 
              | Pneumococcinum               | 
              | Pneumococcus use Streptococcus pneumoniae               | 
              | Pneumoconiogenic Particles               | 
              | Pneumoconiosis               | 
              | Pneumocystis               | 
              | Pneumocystis carinii               | 
              | Pneumocystis Infections               | 
              | Pneumocystis jirovecii               | 
              | Pneumocystis Pneumonia use Pneumonia, Pneumocystis               | 
              | Pneumocystosis use Pneumonia, Pneumocystis               | 
              | Pneumocytes               | 
              | Pneumoencephalography               | 
              | Pneumogastric Nerve use Vagus Nerve               | 
              | Pneumogastric Nerve Disorders use Vagus Nerve Diseases               | 
              | Pneumology use Pulmonary Medicine               | 
              | Pneumomediastinum use Mediastinal Emphysema               | 
              | Pneumomediastinum, Diagnostic               | 
              | Pneumonectomy               | 
              | Pneumonia               | 
              | Pneumonia of Calves, Enzootic               | 
              | Pneumonia of Swine, Enzootic use Pneumonia of Swine, Mycoplasmal               | 
              | Pneumonia of Swine, Mycoplasmal               | 
              | Pneumonia Virus of Mice use Murine pneumonia virus               | 
              | Pneumonia, Aspiration               | 
              | Pneumonia, Atypical Interstitial, of Cattle               | 
              | Pneumonia, Bacterial               | 
              | Pneumonia, Eosinophilic use Pulmonary Eosinophilia               | 
              | Pneumonia, Interstitial use Lung Diseases, Interstitial               | 
              | Pneumonia, Interstitial Plasma Cell use Pneumonia, Pneumocystis               | 
              | Pneumonia, Lipid               | 
              | Pneumonia, Lobar use Pneumonia               | 
              | Pneumonia, Mycoplasma               | 
              | Pneumonia, Pneumococcal               | 
              | Pneumonia, Pneumocystis               | 
              | Pneumonia, Primary Atypical use Pneumonia, Mycoplasma               | 
              | Pneumonia, Progressive Interstitial, of Sheep               | 
              | Pneumonia, Radiation use Radiation Pneumonitis               | 
              | Pneumonia, Rickettsial               | 
              | Pneumonia, Staphylococcal               | 
              | Pneumonia, Ventilator-Associated               | 
              | Pneumonia, Viral               | 
              | Pneumonic Plague use Plague               | 
              | Pneumonitis use Pneumonia               | 
              | Pneumonitis, Hypersensitivity use Alveolitis, Extrinsic Allergic               | 
              | Pneumonitis, Hypersensitivity, Avian use Bird Fancier's Lung               | 
              | Pneumonitis, Interstitial use Lung Diseases, Interstitial               | 
              | Pneumonitis, Radiation use Radiation Pneumonitis               | 
              | Pneumonology use Pulmonary Medicine               | 
              | Pneumonolysis               | 
              | Pneumopericardium               | 
              | Pneumoperitoneum               | 
              | Pneumoperitoneum, Artificial               | 
              | Pneumoradiography               | 
              | Pneumoretroperitoneum use Retropneumoperitoneum               | 
              | Pneumothorax               | 
              | Pneumothorax, Artificial               | 
              | Pneumovirinae               | 
              | Pneumovirus               | 
              | Pneumovirus Infections               | 
              | Pneumovirus, Avian use Metapneumovirus               | 
              | Pneumus boldus use Boldon (Homeopathy)               | 
              | Poa               | 
              | Poaceae               | 
              | Pocket, Gingival use Gingival Pocket               | 
              | Pocket, Periodontal use Periodontal Pocket               | 
              | Podalyria tinctoria use Baptisia tinctoria               | 
              | Podiatry               | 
              | Podocytes               | 
              | Podophyllin               | 
              | Podophyllotoxin               | 
              | Podophyllum               | 
              | Podophyllum peltatum               | 
              | Podospora               | 
              | Podoviridae               | 
              | Poecilia               | 
              | POEMS Syndrome               | 
              | Poet's Jasmine use Jasminum officinale               | 
              | Poetry               | 
              | Poetry as Topic               | 
              | Poikiloderma Congenitale use Rothmund-Thomson Syndrome               | 
              | Point Mutation               | 
              | Point of Care Technology use Point-of-Care Systems               | 
              | Point of Service Regulations use Patient Freedom of Choice Laws               | 
              | Point Source               | 
              | Point Source Storm               | 
              | Point Sources               | 
              | Point-of-Care Systems               | 
              | Poison Control Centers               | 
              | Poison Elder use Rhus venenata               | 
              | Poison Hemlock use Conium               | 
              | Poison Ivy use Toxicodendron               | 
              | Poison Ivy Dermatitis use Dermatitis, Toxicodendron               | 
              | Poison Oak use Toxicodendron               | 
              | Poison Parsley use Aethusa cynapium               | 
              | Poison Sumac use Toxicodendron               | 
              | Poison Sumach use Toxicodendron               | 
              | Poison-Rope Swallowwort use Vincetoxicum officinale               | 
              | Poisonberry use Dulcamara (Homeopathy)               | 
              | Poisonflower use Dulcamara (Homeopathy)               | 
              | Poisoning               | 
              | Poisoning, Heavy Metals, Nervous System use Heavy Metal Poisoning, Nervous System               | 
              | Poisoning, Lead, Nervous System use Lead Poisoning, Nervous System               | 
              | Poisoning, Lead, Nervous System, Adult use Lead Poisoning, Nervous System, Adult               | 
              | Poisoning, Lead, Nervous System, Childhood use Lead Poisoning, Nervous System, Childhood               | 
              | Poisoning, Lead, Neurologic use Lead Poisoning, Nervous System               | 
              | Poisoning, Lead, Neurologic, Adult use Lead Poisoning, Nervous System, Adult               | 
              | Poisoning, Lead, Neurologic, Childhood use Lead Poisoning, Nervous System, Childhood               | 
              | Poisoning, Mercury, Nervous System use Mercury Poisoning, Nervous System               | 
              | Poisoning, Mercury, Neurologic use Mercury Poisoning, Nervous System               | 
              | Poisoning, Nervous System use Neurotoxicity Syndromes               | 
              | Poisonous Wastes use Toxic Wastes               | 
              | Poisons               | 
              | Poisson Distribution               | 
              | Pokeweed use Phytolacca americana               | 
              | Pokeweed Lectins use Pokeweed Mitogens               | 
              | Pokeweed Mitogens               | 
              | pol Gene Products use Gene Products, pol               | 
              | pol Gene Products, Human Immunodeficiency Virus               | 
              | pol Genes use Genes, pol               | 
              | Pol I use DNA Polymerase I               | 
              | Pol I Transcription Initiation Complex Proteins use Pol1 Transcription Initiation Complex Proteins               | 
              | Pol II use DNA Polymerase II               | 
              | Pol III use DNA Polymerase III               | 
              | pol Polyproteins use Gene Products, pol               | 
              | pol Protein use Gene Products, pol               | 
              | Pol1 Transcription Initiation Complex Proteins               | 
              | Poland               | 
              | Poland Syndrome               | 
              | Polar Air               | 
              | Polar Bears use Ursidae               | 
              | Polar Front               | 
              | Polar Recombination use Gene Conversion               | 
              | Polar Regions use Cold Climate               | 
              | Polarcardiography use Vectorcardiography               | 
              | Polarity of Development use Body Patterning               | 
              | Polarization Fluoroimmunoassay use Fluorescence Polarization Immunoassay               | 
              | Polarization Microscopy use Microscopy, Polarization               | 
              | Polarization, Fluorescence use Fluorescence Polarization               | 
              | Polarography               | 
              | Polaron use Gene Conversion               | 
              | Polder               | 
              | Polecat Weed use Ictodes foetida               | 
              | Polemonium coeruleum               | 
              | Polerovirus use Luteoviridae               | 
              | Police               | 
              | Police Power               | 
              | Policies and Cooperation in Science, Technology and Innovation               | 
              | Policy               | 
              | Policy Compliance use Guideline Adherence               | 
              | Policy Making               | 
              | Polio use Poliomyelitis               | 
              | Poliodystrophia Cerebri use Diffuse Cerebral Sclerosis of Schilder               | 
              | Poliomyelitis               | 
              | Poliomyelitis, Bulbar               | 
              | Poliomyelitis, Nonpoliovirus use Poliomyelitis               | 
              | Poliomyelitis, Porcine use Encephalomyelitis, Enzootic Porcine               | 
              | Poliomyelitis, Preparalytic use Poliomyelitis               | 
              | Poliovirus               | 
              | Poliovirus Vaccine, Inactivated               | 
              | Poliovirus Vaccine, Oral               | 
              | Poliovirus Vaccines               | 
              | Polioviruses, Murine use Theilovirus               | 
              | Polish Drying Accelerator use Products for Nails and Cuticles               | 
              | Polishers use Polishes (Health Surveillance)               | 
              | Polishes use Industrial Oils               | 
              | Polishes (Health Surveillance)               | 
              | Polishes, Dental use Dentifrices               | 
              | Polishing Lagoons use Maturing Lagoons               | 
              | Politef use Polytetrafluoroethylene               | 
              | Political Activity use Politics               | 
              | Political Factors               | 
              | Political Systems               | 
              | Politics               | 
              | Pollack Whale use Balaenoptera               | 
              | Pollen               | 
              | Pollen (Homeopathy)               | 
              | Pollen Allergy use Rhinitis, Allergic, Seasonal               | 
              | Pollen Tube               | 
              | Pollination               | 
              | Pollinosis use Rhinitis, Allergic, Seasonal               | 
              | Pollutant Removal use Contaminant Removal               | 
              | Pollutants               | 
              | Pollutants Dispersion               | 
              | Pollutants Propagation use Pollutants Dispersion               | 
              | Pollutants Transport               | 
              | Polluter Pays use Polluter-Pays Principle               | 
              | Polluter-Pays Criterion use Polluter-Pays Principle               | 
              | Polluter-Pays Principle               | 
              | Pollution use Environmental Pollution               | 
              | Pollution Control Measures use Environmental Contamination Control               | 
              | Pollution Indicators               | 
              | Pollution Prevention use Environmental Contamination Control               | 
              | Pollution Reduction use Environmental Contamination Control               | 
              | Pollution Remediation use Environmental Remediation               | 
              | Polonium               | 
              | Poloxalene               | 
              | Poloxamer               | 
              | Poloxamers use Poloxamer               | 
              | Polvidone use Povidone               | 
              | Poly A               | 
              | Poly A Polymerase use Polynucleotide Adenylyltransferase               | 
              | Poly A-Binding Protein use Poly(A)-Binding Proteins               | 
              | Poly A-U               | 
              | Poly Adenosine Diphosphate Ribose               | 
              | Poly ADP Ribose use Poly Adenosine Diphosphate Ribose               | 
              | Poly ADP Ribose Polymerase use Poly(ADP-ribose) Polymerases               | 
              | Poly C               | 
              | Poly dA-dT               | 
              | Poly dT use Poly T               | 
              | Poly G               | 
              | Poly I               | 
              | Poly I-C               | 
              | Poly T               | 
              | Poly U               | 
              | Poly(A) Tail use RNA, Messenger               | 
              | Poly(A)+ mRNA use RNA, Messenger               | 
              | Poly(A)+ RNA use RNA, Messenger               | 
              | Poly(A)-Binding Protein I               | 
              | Poly(A)-Binding Protein II               | 
              | Poly(A)-Binding Proteins               | 
              | Poly(ADP-Ribose) Polymerase use Poly(ADP-ribose) Polymerases               | 
              | Poly(ADP-ribose) Polymerases               | 
              | Poly(ADP-Ribose) Synthase use Poly(ADP-ribose) Polymerases               | 
              | Poly(Deoxyadenylate-Thymidylate) use Poly dA-dT               | 
              | Poly(Lactide-Co-Glycoside) use Polyglactin 910               | 
              | Poly-Hema use Polyhydroxyethyl Methacrylate               | 
              | Polyacetylene use Polyacetylenes               | 
              | Polyacetylenes               | 
              | Polyacid-Modified Composite Resins use Compomers               | 
              | Polyacrylamide Gel Electrophoresis use Electrophoresis, Polyacrylamide Gel               | 
              | Polyacrylamide Gel Electrophoresis, Two-Dimensional use Electrophoresis, Gel, Two-Dimensional               | 
              | Polyadenylate Polymerase use Polynucleotide Adenylyltransferase               | 
              | Polyadenylate Synthetase use Polynucleotide Adenylyltransferase               | 
              | Polyadenylation               | 
              | Polyadenylation Factors use mRNA Cleavage and Polyadenylation Factors               | 
              | Polyadenylic Acids use Poly A               | 
              | Polyadenylic-Polyuridylic Acid use Poly A-U               | 
              | Polyalkenoate Cements use Glass Ionomer Cements               | 
              | Polyalthia               | 
              | Polyamides use Nylons               | 
              | Polyamines               | 
              | Polyamines, Biogenic use Biogenic Polyamines               | 
              | Polyanethol Sulfonate use Polyanetholesulfonate               | 
              | Polyanetholesulfonate               | 
              | Polyangiaceae use Myxococcales               | 
              | Polyangium use Myxococcales               | 
              | Polyanhydrides               | 
              | Polyarteritis Nodosa               | 
              | Polyarthralgia use Arthralgia               | 
              | Polyarthritis use Arthritis               | 
              | Polyaziridine use Polyethyleneimine               | 
              | Polybrominated Biphenyls               | 
              | Polybromobiphenyl Compounds use Polybrominated Biphenyls               | 
              | Polycarboxylate Cement               | 
              | Polychaeta               | 
              | Polychemotherapy use Drug Therapy, Combination               | 
              | Polychlorinated Biphenyls               | 
              | Polychlorobiphenyl Compounds use Polychlorinated Biphenyls               | 
              | Polychloroethylene use Polyvinyl Chloride               | 
              | Polychloroprene use Neoprene               | 
              | Polychloroterphenyl Compounds               | 
              | Polychlorotriphenyl Compounds use Polychloroterphenyl Compounds               | 
              | Polychondritis, Chronic Atrophic use Polychondritis, Relapsing               | 
              | Polychondritis, Relapsing               | 
              | Polychrest Remedies use Polychrests               | 
              | Polychrests               | 
              | Polyclinic use Health Centers               | 
              | Polycrests use Polychrests               | 
              | Polycyclic Aromatic Hydrocarbons use Polycyclic Hydrocarbons, Aromatic               | 
              | Polycyclic Compounds               | 
              | Polycyclic Hydrocarbons use Polycyclic Compounds               | 
              | Polycyclic Hydrocarbons, Aromatic               | 
              | Polycystic Kidney Disease, Infantile, Type I use Polycystic Kidney, Autosomal Recessive               | 
              | Polycystic Kidney Diseases               | 
              | Polycystic Kidney, Autosomal Dominant               | 
              | Polycystic Kidney, Autosomal Recessive               | 
              | Polycystic Ovary Syndrome               | 
              | Polycythemia               | 
              | Polycythemia Rubra Vera use Polycythemia Vera               | 
              | Polycythemia Vera               | 
              | Polycytidylic Acids use Poly C               | 
              | Polydactyly               | 
              | Polydeoxyadenine Nucleotides-Polythymine Nucleotides use Poly dA-dT               | 
              | Polydeoxyribonucleotide Ligases use DNA Ligases               | 
              | Polydeoxyribonucleotide Synthetases use DNA Ligases               | 
              | Polydeoxyribonucleotides               | 
              | Polydimethylsiloxanes use Dimethylpolysiloxanes               | 
              | Polydioxanone               | 
              | Polydnaviridae               | 
              | Polydystrophic Dwarfism use Mucopolysaccharidosis VI               | 
              | Polydystrophic Oligophrenia use Mucopolysaccharidosis III               | 
              | Polyelectrolytes use Polymers               | 
              | Polyendocrinopathies, Autoimmune               | 
              | Polyenes               | 
              | Polyesters               | 
              | Polyethylene               | 
              | Polyethylene Glycol Cetyl Ether use Cetomacrogol               | 
              | Polyethylene Glycols               | 
              | Polyethylene Pipes               | 
              | Polyethylene Terephthalates               | 
              | Polyethyleneimine               | 
              | Polyethylenes               | 
              | Polygala               | 
              | Polygala senega use Senega               | 
              | Polygala virginiana use Senega               | 
              | Polygalaceae               | 
              | Polygalactoses use Galactans               | 
              | Polygalacturonase               | 
              | Polygeline               | 
              | Polygenic Inheritance use Multifactorial Inheritance               | 
              | Polygenic Traits use Multifactorial Inheritance               | 
              | Polyglactin 910               | 
              | Polyglandular Type I Autoimmune Syndrome use Polyendocrinopathies, Autoimmune               | 
              | Polyglandular Type II Autoimmune Syndrome use Polyendocrinopathies, Autoimmune               | 
              | Polyglucoses use Glucans               | 
              | Polyglutamate Folates use Pteroylpolyglutamic Acids               | 
              | Polyglutamic Acid               | 
              | Polyglycol Methacrylate use Polyhydroxyethyl Methacrylate               | 
              | Polyglycolic Acid               | 
              | Polyglycolide use Polyglycolic Acid               | 
              | Polygonaceae               | 
              | Polygonatum               | 
              | Polygonum               | 
              | Polygonum aviculare               | 
              | Polygonum cuspidatum               | 
              | Polygonum hydropiperoides               | 
              | Polygonum maritimum               | 
              | Polygonum meissnerianum use Polygonum sagittatum               | 
              | Polygonum persicaria               | 
              | Polygonum sagittatum               | 
              | Polyguanylic Acids use Poly G               | 
              | Polyhydramnios               | 
              | Polyhydroxyalkanoates               | 
              | Polyhydroxyethyl Methacrylate               | 
              | Polyinosinic Acids use Poly I               | 
              | Polyisocyanates use Polyurethanes               | 
              | Polyisoprenyl Phosphate Monosaccharides               | 
              | Polyisoprenyl Phosphate Oligosaccharides               | 
              | Polyisoprenyl Phosphate Sugars               | 
              | Polyisoprenyl Phosphates               | 
              | Polykaryocytes use Giant Cells               | 
              | Polyketide Synthases               | 
              | Polylysine               | 
              | Polymenophorea               | 
              | Polymenorrhea use Menstruation Disturbances               | 
              | Polymerase Chain Reaction               | 
              | Polymerase Chain Reaction, Reverse Transcriptase use Reverse Transcriptase Polymerase Chain Reaction               | 
              | Polymeric Immunoglobulin Receptors use Receptors, Polymeric Immunoglobulin               | 
              | Polymerization               | 
              | Polymers               | 
              | Polymethacrylic Acids               | 
              | Polymethyl Methacrylate               | 
              | Polymethylmethacrylate use Polymethyl Methacrylate               | 
              | Polymnia uvedalia               | 
              | Polymorphic Epithelial Mucin use Mucin-1               | 
              | Polymorphic Reticulosis use Granuloma, Lethal Midline               | 
              | Polymorphism (Genetics) use Polymorphism, Genetic               | 
              | Polymorphism, Crystallization use Crystallization               | 
              | Polymorphism, Genetic               | 
              | Polymorphism, Restriction Fragment Length               | 
              | Polymorphism, Single Nucleotide               | 
              | Polymorphism, Single-Stranded Conformational               | 
              | Polymorphonuclear Leukocyte Elastase use Leukocyte Elastase               | 
              | Polymorphonuclear Leukocytes use Neutrophils               | 
              | Polymyalgia Rheumatica               | 
              | Polymyoclonus use Myoclonus               | 
              | Polymyositis               | 
              | Polymyositis-Dermatomyositis use Dermatomyositis               | 
              | Polymyxa use Plasmodiophorida               | 
              | Polymyxin use Polymyxins               | 
              | Polymyxin B               | 
              | Polymyxin E use Colistin               | 
              | Polymyxins               | 
              | Polynesia               | 
              | Polyneuritis use Neuritis               | 
              | Polyneuropathies               | 
              | Polyneuropathy, Acquired use Polyneuropathies               | 
              | Polyneuropathy, Alcoholic use Alcoholic Neuropathy               | 
              | Polyneuropathy, Paraneoplastic use Paraneoplastic Polyneuropathy               | 
              | Polynuclear Aromatic Hydrocarbons use Polycyclic Hydrocarbons, Aromatic               | 
              | Polynucleotide 5'-Hydroxyl-Kinase               | 
              | Polynucleotide Adenylyltransferase               | 
              | Polynucleotide Hydroxylkinase use Polynucleotide 5'-Hydroxyl-Kinase               | 
              | Polynucleotide Kinase use Polynucleotide 5'-Hydroxyl-Kinase               | 
              | Polynucleotide Ligases               | 
              | Polynucleotide Phosphorylase use Polyribonucleotide Nucleotidyltransferase               | 
              | Polynucleotide Synthetases use Polynucleotide Ligases               | 
              | Polynucleotide Vaccines use Vaccines, DNA               | 
              | Polynucleotides               | 
              | Polyomaviridae               | 
              | Polyomavirus               | 
              | Polyomavirus Infections               | 
              | Polyomavirus Large T Antigens use Antigens, Polyomavirus Transforming               | 
              | Polyomavirus Middle T Antigens use Antigens, Polyomavirus Transforming               | 
              | Polyomavirus Small T Antigens use Antigens, Polyomavirus Transforming               | 
              | Polyomavirus T Proteins use Antigens, Polyomavirus Transforming               | 
              | Polyomavirus Transforming Antigens use Antigens, Polyomavirus Transforming               | 
              | Polyomavirus Tumor Antigens use Antigens, Polyomavirus Transforming               | 
              | Polyomavirus, BK use BK Virus               | 
              | Polyomavirus, JC use JC Virus               | 
              | Polyopsia use Diplopia               | 
              | Polyoxyethylene Polyoxypropylene Polyoxyethylene Polymer use Poloxalene               | 
              | Polyoxyethylenes use Polyethylene Glycols               | 
              | Polypentose Sulfate use Pentosan Sulfuric Polyester               | 
              | Polypeptide Hormones use Peptide Hormones               | 
              | Polypeptides use Peptides               | 
              | Polyphagidae use Cockroaches               | 
              | Polypharmacy               | 
              | Polyphenols use Phenolic Compounds               | 
              | Polyphloretin Phosphate               | 
              | Polyphosphates               | 
              | Polyphosphoinositides use Phosphatidylinositol Phosphates               | 
              | Polyplacophora               | 
              | Polyplax use Anoplura               | 
              | Polyploidy               | 
              | Polypodiaceae               | 
              | Polypodium               | 
              | Polypodium filix-mas use Filix-mas               | 
              | Polyporaceae               | 
              | Polyporales               | 
              | Polyporus               | 
              | Polyporus officinalis use Boletus laricis               | 
              | Polyporus pinicola               | 
              | Polyposis Coli, Familial use Adenomatous Polyposis Coli               | 
              | Polyposis Syndrome, Familial use Adenomatous Polyposis Coli               | 
              | Polypropylenes               | 
              | Polyproteins               | 
              | Polyps               | 
              | Polypyrimidine Tract-Binding Protein               | 
              | Polyradiculitis use Polyradiculopathy               | 
              | Polyradiculoneuritis use Polyradiculoneuropathy               | 
              | Polyradiculoneuropathy               | 
              | Polyradiculoneuropathy, Acute Inflammatory use Guillain-Barre Syndrome               | 
              | Polyradiculoneuropathy, Chronic Inflammatory Demyelinating               | 
              | Polyradiculopathy               | 
              | Polyradiculopathy, Abdominal use Polyradiculopathy               | 
              | Polyribonucleotide Nucleotidyltransferase               | 
              | Polyribonucleotide Synthetase use RNA Ligase (ATP)               | 
              | Polyribonucleotides               | 
              | Polyribosomes               | 
              | Polyrotaxanes use Rotaxanes               | 
              | Polysaccharide-Lyases               | 
              | Polysaccharides               | 
              | Polysaccharides, Bacterial               | 
              | Polysomes use Polyribosomes               | 
              | Polysomnography               | 
              | Polysorbate 20 use Polysorbates               | 
              | Polysorbate 80 use Polysorbates               | 
              | Polysorbates               | 
              | Polystichum               | 
              | Polystyrenes               | 
              | Polysyndactyly use Syndactyly               | 
              | Polytef use Polytetrafluoroethylene               | 
              | Polytene Chromosome               | 
              | Polytetrafluoroethylene               | 
              | Polythene use Polyethylene               | 
              | Polythiazide               | 
              | Polythymidylic Acids use Poly T               | 
              | Polytrichum juniperinum               | 
              | Polyubiquitin               | 
              | Polyunsaturated Alkamides               | 
              | Polyunsaturated Alkylamides use Polyunsaturated Alkamides               | 
              | Polyunsaturated Isobutylamides use Polyunsaturated Alkamides               | 
              | Polyurethanes               | 
              | Polyuria               | 
              | Polyuridylic Acids use Poly U               | 
              | Polyvidon use Povidone               | 
              | Polyvinyl Alcohol               | 
              | Polyvinyl Chloride               | 
              | Polyvinylpyridine N-Oxide               | 
              | Polyvinylpyrrolidone use Povidone               | 
              | Polyvinylpyrrolidone Iodine use Povidone-Iodine               | 
              | Polyvinyls               | 
              | Polyynes use Polyacetylenes               | 
              | POMC use Pro-Opiomelanocortin               | 
              | Pomegranate use Punicaceae               | 
              | Pomelo Tree use Citrus               | 
              | Pompe Disease use Glycogen Storage Disease Type II               | 
              | Pompholyx use Eczema, Dyshidrotic               | 
              | Poncirus               | 
              | Pond Lily, Yellow use Nuphar               | 
              | Ponderosa Pine use Pinus ponderosa               | 
              | Ponds               | 
              | Pongamia               | 
              | Pongo               | 
              | Pongo abelii               | 
              | Pongo pygmaeus               | 
              | Pons               | 
              | Ponsinomycin use Miocamycin               | 
              | Pontederia use Pontederiaceae               | 
              | Pontederiaceae               | 
              | Pontic use Denture, Partial, Fixed               | 
              | Pontine Glioma               | 
              | Pontine Hemorrhage, Traumatic use Brain Stem Hemorrhage, Traumatic               | 
              | Pontine Neoplasms use Brain Stem Neoplasms               | 
              | Pontoporia blainvillei use Dolphins               | 
              | PONV use Postoperative Nausea and Vomiting               | 
              | Poorhouses use Almshouses               | 
              | Poorman's Barometer use Anagallis arvensis               | 
              | Pop (Soft Drink) use Soft Drinks               | 
              | Poplar, Balsam use Populus               | 
              | Poplar, Black use Populus               | 
              | Poplar, True use Populus               | 
              | Poplar, Yellow use Liriodendron               | 
              | Popliteal Artery               | 
              | Popliteal Cyst               | 
              | Popliteal Vein               | 
              | Poppy use Papaver               | 
              | Poppy, California use Eschscholzia               | 
              | Poppy, Prickly use Argemone               | 
              | Popsicle use Ice-cold Foods               | 
              | Popular Works               | 
              | Population               | 
              | Population at Risk               | 
              | Population Characteristics               | 
              | Population Concentration               | 
              | Population Control               | 
              | Population Control Policies use Population Policy               | 
              | Population Density               | 
              | Population Distribution use Demography               | 
              | Population Dynamics               | 
              | Population Education               | 
              | Population Estimates               | 
              | Population Explosion use Population Growth               | 
              | Population Explosion (Disasters)               | 
              | Population Groups               | 
              | Population Growth               | 
              | Population not Economically Active use Inactive Population               | 
              | Population Policy               | 
              | Population Pressure               | 
              | Population Projections               | 
              | Population Size use Population Density               | 
              | Population Statistics use Demographic Data               | 
              | Population Studies in Public Health               | 
              | Population Surveillance               | 
              | Population Surveys               | 
              | Population-Based Planning use Community Health Planning               | 
              | Populus               | 
              | Populus balsamifera use Populus candicans               | 
              | Populus candicans               | 
              | Populus tremuloides               | 
              | Porcelain use Dental Porcelain               | 
              | Porcelain-Metal Alloys use Metal Ceramic Alloys               | 
              | Porcelia use Annonaceae               | 
              | Porcine Adenoviruses use Adenoviruses, Porcine               | 
              | Porcine circovirus use Circovirus               | 
              | Porcine Enteroviruses use Enteroviruses, Porcine               | 
              | Porcine Epidemic Abortion and Respiratory Syndrome use Porcine Reproductive and Respiratory Syndrome               | 
              | Porcine epidemic diarrhea virus               | 
              | Porcine Gastroenteritis, Transmissible use Gastroenteritis, Transmissible, of Swine               | 
              | Porcine hemagglutinating encephalomyelitis virus use Coronavirus               | 
              | Porcine parvovirus use Parvovirus, Porcine               | 
              | Porcine Postweaning Multisystemic Wasting Syndrome               | 
              | Porcine Reproductive and Respiratory Syndrome               | 
              | Porcine respiratory and reproductive syndrome virus               | 
              | Porcine Respiratory Coronavirus               | 
              | Porcine torovirus use Torovirus               | 
              | Porcine Transmissible Gastroenteritis Virus use Transmissible gastroenteritis virus               | 
              | Porcine Xenograft Bioprosthesis use Bioprosthesis               | 
              | Porcine Xenograft Dressings use Biological Dressings               | 
              | Porcupines               | 
              | Pore Forming Cytotoxic Proteins               | 
              | Pore Proteins use Porins               | 
              | Porfimer use Dihematoporphyrin Ether               | 
              | Porfiromycin               | 
              | Porgies use Perciformes               | 
              | Poria               | 
              | Porichthys use Batrachoidiformes               | 
              | Porifera               | 
              | Porins               | 
              | Pornography use Erotica               | 
              | Porokeratosis               | 
              | Porokeratosis of Mibelli use Porokeratosis               | 
              | Porokeratosis Palmaris et Plantaris Disseminata use Porokeratosis               | 
              | Porokeratosis, Disseminated Superficial Actinic use Porokeratosis               | 
              | Porokeratosis, Linear use Porokeratosis               | 
              | Porokeratosis, Mibelli use Porokeratosis               | 
              | Porokeratosis, Palmoplantar use Porokeratosis               | 
              | Porokeratosis, Punctate use Porokeratosis               | 
              | Poroma               | 
              | Poroporo use Solanum               | 
              | Porosity               | 
              | Porous Media Flocculators               | 
              | PORP use Ossicular Prosthesis               | 
              | Porphobilinogen               | 
              | Porphobilinogen Ammonia-Lyase use Hydroxymethylbilane Synthase               | 
              | Porphobilinogen Deaminase use Hydroxymethylbilane Synthase               | 
              | Porphobilinogen Synthase               | 
              | Porphyra               | 
              | Porphyria Cutanea Tarda               | 
              | Porphyria, Acute Intermittent               | 
              | Porphyria, Erythrohepatic use Porphyria, Hepatoerythropoietic               | 
              | Porphyria, Erythropoietic               | 
              | Porphyria, Erythropoietic, Congenital use Porphyria, Erythropoietic               | 
              | Porphyria, Hepatoerythropoietic               | 
              | Porphyria, Variegate               | 
              | Porphyrias               | 
              | Porphyrias, Hepatic               | 
              | Porphyridium               | 
              | Porphyrin-Metal Chelatase use Ferrochelatase               | 
              | Porphyrinogens               | 
              | Porphyrins               | 
              | Porphyromonas               | 
              | Porphyromonas endodontalis               | 
              | Porphyromonas gingivalis               | 
              | Porpoises               | 
              | Port Orford Cedar use Cupressus lawsoniana               | 
              | Port Orford Cypress use Cupressus lawsoniana               | 
              | Port Orford White Cedar use Cupressus lawsoniana               | 
              | Port-Wine Stain               | 
              | Portacaval Shunt, Surgical               | 
              | Portal Pressure               | 
              | Portal System               | 
              | Portal Vein               | 
              | Portals for Scientific Journals               | 
              | Portasystemic Shunt, Surgical               | 
              | Portasystemic Shunt, Transjugular Intrahepatic               | 
              | Portoenterostomy, Hepatic               | 
              | Portography               | 
              | Portosystemic Encephalopathy use Hepatic Encephalopathy               | 
              | Portosystemic Shunt, Surgical use Portasystemic Shunt, Surgical               | 
              | Portosystemic Shunt, Transjugular Intrahepatic use Portasystemic Shunt, Transjugular Intrahepatic               | 
              | Portraits               | 
              | Portraits as Topic               | 
              | Portugal               | 
              | Portuguese Guinea use Guinea-Bissau               | 
              | Portuguese Man-of-War use Hydrozoa               | 
              | Portulaca               | 
              | Portulacaceae               | 
              | Posidonia use Alismatidae               | 
              | Position Description use Job Description               | 
              | Position Sense use Proprioception               | 
              | Position-Specific Scoring Matrices               | 
              | Position-Specific Weight Matrices use Position-Specific Scoring Matrices               | 
              | Positive Displacement Pumps               | 
              | Positive End-Expiratory Pressure use Positive-Pressure Respiration               | 
              | Positive Reinforcement use Reinforcement (Psychology)               | 
              | Positive Transcriptional Elongation Factor B               | 
              | Positive-Pressure Respiration               | 
              | Positive-Pressure Respiration, Intrinsic               | 
              | Positive-Pressure Respiration, Occult use Positive-Pressure Respiration, Intrinsic               | 
              | Positron-Emission Tomography               | 
              | Positrons use Electrons               | 
              | Posology               | 
              | Possums, Brush-Tailed use Trichosurus               | 
              | Post and Core Technique               | 
              | Post Disaster Reconstruction use Reconstruction               | 
              | Post Disaster Resettlement               | 
              | Post-Anesthesia Nursing use Postanesthesia Nursing               | 
              | Post-Basic Nursing Education use Education, Nursing, Continuing               | 
              | Post-Concussion Syndrome               | 
              | Post-Concussive Syndrome use Post-Concussion Syndrome               | 
              | Post-Dural Puncture Headache               | 
              | Post-Exercise Hypotension               | 
              | Post-Exposure Prophylaxis               | 
              | Post-Ictal Memory Loss use Amnesia, Anterograde               | 
              | Post-Infarction Heart Rupture use Heart Rupture, Post-Infarction               | 
              | Post-operative Vasoplegic Syndrome use Vasoplegia               | 
              | Post-Polio Syndrome use Postpoliomyelitis Syndrome               | 
              | Post-Poliomyelitis Syndrome use Postpoliomyelitis Syndrome               | 
              | Post-Registration Nursing Education use Education, Nursing, Continuing               | 
              | Post-Surgical Nursing use Postanesthesia Nursing               | 
              | Post-Synaptic Density               | 
              | Post-Transcriptional Gene Silencing use RNA Interference               | 
              | Post-Transcriptional RNA Modification use RNA Processing, Post-Transcriptional               | 
              | Post-Translational Isoprenylation use Protein Prenylation               | 
              | Post-Translational Protein Modification use Protein Processing, Post-Translational               | 
              | Post-Traumatic Cancer use Neoplasms, Post-Traumatic               | 
              | Post-Traumatic Headache               | 
              | Post-Traumatic Hydrocephalus use Hydrocephalus               | 
              | Post-Traumatic Neoplasms use Neoplasms, Post-Traumatic               | 
              | Post-Traumatic Stress Disorders use Stress Disorders, Post-Traumatic               | 
              | Post-Traumatic Tic Disorder use Tic Disorders               | 
              | Post-Traumatic Vegetative State use Persistent Vegetative State               | 
              | Post-Vaccinal Encephalomyelitis use Encephalomyelitis, Acute Disseminated               | 
              | Postage Stamps use Philately               | 
              | Postal Service               | 
              | Postanesthesia Nursing               | 
              | Postcards               | 
              | Postcholecystectomy Syndrome               | 
              | Postcholedochoduodenostomy Syndrome use Postcholecystectomy Syndrome               | 
              | Postcholedochojejunostomy Syndrome use Postcholecystectomy Syndrome               | 
              | Postcholedochostomy Syndrome use Postcholecystectomy Syndrome               | 
              | Postcibal Period use Postprandial Period               | 
              | Postcoital Contraceptives use Contraceptives, Postcoital               | 
              | Postcommissurotomy Syndrome use Postpericardiotomy Syndrome               | 
              | Postencephalitic Parkinsonism use Parkinson Disease, Postencephalitic               | 
              | Posterior Capsular Rupture, Ocular               | 
              | Posterior Capsule of the Lens               | 
              | Posterior Capsule, Lens use Posterior Capsule of the Lens               | 
              | Posterior Cerebral Artery               | 
              | Posterior Cerebral Artery Infarction use Infarction, Posterior Cerebral Artery               | 
              | Posterior Cervical Sympathetic Syndrome               | 
              | Posterior Choroidal Artery Infarction use Cerebral Infarction               | 
              | Posterior Cruciate Ligament               | 
              | Posterior Eye Segment               | 
              | Posterior Fossa Neoplasms use Infratentorial Neoplasms               | 
              | Posterior Horn Cells               | 
              | Posterior Hypothalamic Region use Hypothalamus, Posterior               | 
              | Posterior Inferior Cerebellar Artery Syndrome use Lateral Medullary Syndrome               | 
              | Posterior Ischemic Optic Neuropathy use Optic Neuropathy, Ischemic               | 
              | Posterior Leukoencephalopathy Syndrome               | 
              | Posterior Longitudinal Ligament use Longitudinal Ligaments               | 
              | Posterior Nucleus of Thalamus use Posterior Thalamic Nuclei               | 
              | Posterior Spinal Artery Syndrome use Spinal Cord Vascular Diseases               | 
              | Posterior Thalamic Nuclei               | 
              | Posterior Tibial Nerve use Tibial Nerve               | 
              | Posterior Tibial Neuropathy use Tibial Neuropathy               | 
              | Posterior Tibial Tendon Dysfunction               | 
              | Posterior Vitreous Detachment use Vitreous Detachment               | 
              | Posters               | 
              | Posters as Topic               | 
              | Postgastrectomy Syndromes               | 
              | Postgraduate Nursing Education use Education, Nursing, Graduate               | 
              | Posthumous Conception               | 
              | Posthumous Reproduction use Posthumous Conception               | 
              | Postimplantation Embryo Development use Embryonic Development               | 
              | Postinfectious Encephalomyelitis use Encephalomyelitis, Acute Disseminated               | 
              | Postmarketing Product Surveillance use Product Surveillance, Postmarketing               | 
              | Postmenopausal Bone Loss use Osteoporosis, Postmenopausal               | 
              | Postmenopausal Hormone Replacement Therapy use Estrogen Replacement Therapy               | 
              | Postmenopausal Osteoporosis use Osteoporosis, Postmenopausal               | 
              | Postmenopause               | 
              | Postmodernism               | 
              | Postmortem Changes               | 
              | Postnatal Care               | 
              | Postnatal Depression use Depression, Postpartum               | 
              | Postneonatal Mortality               | 
              | Postoperative Care               | 
              | Postoperative Complications               | 
              | Postoperative Hemorrhage               | 
              | Postoperative Nausea and Vomiting               | 
              | Postoperative Period               | 
              | Postoperative Vasoplegic Syndrome use Vasoplegia               | 
              | Postoperative Wound Infection use Surgical Wound Infection               | 
              | Postovulatory Phase use Luteal Phase               | 
              | Postpartum Depression use Depression, Postpartum               | 
              | Postpartum Hemorrhage               | 
              | Postpartum Period               | 
              | Postpartum Thyroiditis               | 
              | Postpericardiotomy Syndrome               | 
              | Postphlebitic Disease use Postphlebitic Syndrome               | 
              | Postphlebitic Syndrome               | 
              | Postphlebitic Ulcer use Postphlebitic Syndrome               | 
              | Postpoliomyelitis Muscular Atrophy use Postpoliomyelitis Syndrome               | 
              | Postpoliomyelitis Syndrome               | 
              | Postprandial Hyperglycemia use Hyperglycemia               | 
              | Postprandial Period               | 
              | Postthrombotic Syndrome               | 
              | Postural Balance               | 
              | Postural Drainage use Drainage, Postural               | 
              | Postural Drainage, Pulmonary use Drainage, Postural               | 
              | Postural Orthostatic Tachycardia Syndrome               | 
              | Postural Tachycardia Syndrome use Postural Orthostatic Tachycardia Syndrome               | 
              | Posture               | 
              | Postviral Fatigue Syndrome use Fatigue Syndrome, Chronic               | 
              | Postweaning Multisystemic Wasting Syndrome, Porcine use Porcine Postweaning Multisystemic Wasting Syndrome               | 
              | Postzoster Arteritis use Vasculitis, Central Nervous System               | 
              | Pot-Marigold use Calendula officinalis (Homeopathy)               | 
              | Potable Water               | 
              | Potamobius astacus use Astacus fluviatilis               | 
              | Potamogeton use Potamogetonaceae               | 
              | Potamogeton natans               | 
              | Potamogetonaceae               | 
              | Potassium               | 
              | Potassium Acetate               | 
              | Potassium Antimonyltartrate use Antimony Potassium Tartrate               | 
              | Potassium Bichromate use Potassium Dichromate               | 
              | Potassium Bioxalate use Kali Bioxalicum               | 
              | Potassium Bitartrate use Kali Bitartaricum               | 
              | Potassium Canrenoate use Canrenoate Potassium               | 
              | Potassium Channel Blockers               | 
              | Potassium Channel Interacting Proteins use Kv Channel-Interacting Proteins               | 
              | Potassium Channels               | 
              | Potassium Channels, Background use Potassium Channels, Tandem Pore Domain               | 
              | Potassium Channels, Baseline use Potassium Channels, Tandem Pore Domain               | 
              | Potassium Channels, Calcium-Activated               | 
              | Potassium Channels, Intermediate-Conductance Calcium-Activated use Intermediate-Conductance Calcium-Activated Potassium Channels               | 
              | Potassium Channels, Inwardly Rectifying               | 
              | Potassium Channels, Leak use Potassium Channels, Tandem Pore Domain               | 
              | Potassium Channels, Tandem Pore Domain               | 
              | Potassium Channels, Voltage-Gated               | 
              | Potassium Chloride               | 
              | Potassium Chlorite use Kali Chlorosum               | 
              | Potassium Chromate use Kali Chromicum               | 
              | Potassium Citrate               | 
              | Potassium Clavulanate-Amoxicillin Combination use Amoxicillin-Potassium Clavulanate Combination               | 
              | Potassium Compounds               | 
              | Potassium Cyanide               | 
              | Potassium Deficiency               | 
              | Potassium Dichromate               | 
              | Potassium Glutamate use Glutamates               | 
              | Potassium Iodide               | 
              | Potassium Isotopes               | 
              | Potassium Magnesium Asparaginate use Potassium Magnesium Aspartate               | 
              | Potassium Magnesium Aspartate               | 
              | Potassium Monoacid Phosphate use Kali Phosphoricum               | 
              | Potassium Permanganate               | 
              | Potassium Phosphate, Dibasic use Kali Phosphoricum               | 
              | Potassium Pump use Sodium-Potassium-Exchanging ATPase               | 
              | Potassium Radioisotopes               | 
              | Potassium Succinate use Succinic Acid               | 
              | Potassium, Dietary               | 
              | Potassium-Hydrogen Antiporters               | 
              | Potato Fecula use Starch and Fecula               | 
              | Potato Virus X use Potexvirus               | 
              | Potato Virus Y use Potyvirus               | 
              | Potatoes use Solanum tuberosum               | 
              | Potency               | 
              | Potency Similitude use Simillimum Potency               | 
              | Potency Tracking use Simillimum Potency               | 
              | Potency, High use High Potencies               | 
              | Potency, Low use Low Potencies               | 
              | Potential for Purification use Analysis of Treatability               | 
              | Potential Injury Creating Events use Disasters               | 
              | Potential Years of Life Lost               | 
              | Potentila use Potentilla tormentilla               | 
              | Potentilla               | 
              | Potentilla anserina               | 
              | Potentilla aurea               | 
              | Potentilla erecta               | 
              | Potentilla reptans               | 
              | Potentilla tormentilla               | 
              | Potentiometry               | 
              | Potexvirus               | 
              | Pothos foetidus               | 
              | Potoroidae               | 
              | Pott Disease use Tuberculosis, Spinal               | 
              | Pottos use Lorisidae               | 
              | Potyviridae               | 
              | Potyvirus               | 
              | POU Domain Factors               | 
              | Pou4f1 Transcription Factor use Transcription Factor Brn-3A               | 
              | Pou4f2 Transcription Factor use Transcription Factor Brn-3B               | 
              | Pou4f3 Transcription Factor use Transcription Factor Brn-3C               | 
              | Pouchitis               | 
              | Poult Enteritis Mortality Syndrome               | 
              | Poultry               | 
              | Poultry Diseases               | 
              | Poultry Farms use Aviculture               | 
              | Poultry Products               | 
              | Poultry Raising use Aviculture               | 
              | Pour Plate Count use Colony Count, Microbial               | 
              | Pouteria               | 
              | Poverty               | 
              | Poverty Areas               | 
              | Povidone               | 
              | Povidone-Iodine               | 
              | Powassan Encephalitis use Encephalitis, Tick-Borne               | 
              | Powassan virus use Encephalitis Viruses, Tick-Borne               | 
              | Powder Diffraction               | 
              | Powder for Body               | 
              | Powder for Food Preparation               | 
              | Powdered Milk use Breast-Milk Substitutes               | 
              | Powders               | 
              | Power (Psychology)               | 
              | Power Plants               | 
              | Power Provision use Energy Supply               | 
              | Power Sources use Electric Power Supplies               | 
              | Power Sources (Environmental Health)               | 
              | Power Sources, Bioelectric use Bioelectric Energy Sources               | 
              | Power Suppliers use Power Sources (Environmental Health)               | 
              | Power Supplies use Electric Power Supplies               | 
              | Power Supply use Energy Supply               | 
              | Power, Personal use Power (Psychology)               | 
              | Power, Professional use Power (Psychology)               | 
              | Power, Social use Power (Psychology)               | 
              | Poxviridae               | 
              | Poxviridae Infections               | 
              | Poxvirus avium use Avipoxvirus               | 
              | Poxvirus Infections use Poxviridae Infections               | 
              | Poxvirus muris use Ectromelia virus               | 
              | Poxvirus Myxomatis use Myxoma virus               | 
              | Poxvirus officinale use Vaccinia virus               | 
              | Poxvirus variolae use Variola virus               | 
              | PP Cells, Pancreatic use Pancreatic Polypeptide-Secreting Cells               | 
              | pp39(c-mos) use Proto-Oncogene Proteins c-mos               | 
              | pp59(v-rel) use Oncogene Proteins v-rel               | 
              | pp60(c-src) use Proto-Oncogene Proteins pp60(c-src)               | 
              | pp60(v-src) use Oncogene Protein pp60(v-src)               | 
              | PPAR alpha               | 
              | PPAR delta               | 
              | PPAR gamma               | 
              | PPAR-beta               | 
              | PPARalpha use PPAR alpha               | 
              | PPARdelta use PPAR delta               | 
              | PPARgamma use PPAR gamma               | 
              | PPIase use Peptidylprolyl Isomerase               | 
              | PPLO use Mycoplasma               | 
              | PPP use Public-Private Partnership               | 
              | PPRA use Program of Risk Prevention on Working Environment               | 
              | PQQ Cofactor               | 
              | Practice (Psychology)               | 
              | Practice Guideline               | 
              | Practice Guidelines as Topic               | 
              | Practice Management               | 
              | Practice Management Services use Practice Management               | 
              | Practice Management, Dental               | 
              | Practice Management, Medical               | 
              | Practice Patterns, Dental use Dentist's Practice Patterns               | 
              | Practice Patterns, Professional use Physician's Practice Patterns               | 
              | Practice Valuation and Purchase               | 
              | Practolol               | 
              | PRAD1 Protein use Cyclin D1               | 
              | Prader-Willi Syndrome               | 
              | Prairie Dogs use Sciuridae               | 
              | Prajmaline               | 
              | Prajmalium use Prajmaline               | 
              | Pralidoxime Compounds               | 
              | Praomys use Murinae               | 
              | Praseodymium               | 
              | Prasterone use Dehydroepiandrosterone               | 
              | Prausnitz-Kustner Test use Intradermal Tests               | 
              | Pravastatin               | 
              | Prayer use Religion               | 
              | Prayer Healing use Faith Healing               | 
              | Praying Mantis use Mantodea               | 
              | Prazepam               | 
              | Praziquantel               | 
              | Prazosin               | 
              | Pre-B Cell Receptors               | 
              | Pre-B Lymphocytes use Precursor Cells, B-Lymphoid               | 
              | Pre-B-Cell Colony-Enhancing Factor use Nicotinamide Phosphoribosyltransferase               | 
              | Pre-B-Cell Leukemia use Precursor B-Cell Lymphoblastic Leukemia-Lymphoma               | 
              | Pre-Eclampsia               | 
              | Pre-Excitation Syndromes               | 
              | Pre-Excitation, Mahaim-Type               | 
              | Pre-Hospital Care use Prehospital Care               | 
              | Pre-Hospital Services use Prehospital Services               | 
              | Pre-Hypertension use Prehypertension               | 
              | Pre-Ictal Memory Loss use Amnesia, Retrograde               | 
              | Pre-Menopause use Premenopause               | 
              | Prealbumin               | 
              | Preanesthetic Medication               | 
              | Prebeta-Lipoproteins use Lipoproteins, VLDL               | 
              | Prebiotics               | 
              | Precancerous Conditions               | 
              | Precatory Bean use Abrus precatorius               | 
              | Precatory Bean Plant use Abrus               | 
              | Precaution               | 
              | Precautions, Universal use Universal Precautions               | 
              | Preceptorship               | 
              | Precipitating Factors               | 
              | Precipitation Gauge               | 
              | Precipitation Intensity               | 
              | Precipitation Types               | 
              | Precipitin Tests               | 
              | Precipitins               | 
              | Precision Attachment, Denture use Denture Precision Attachment               | 
              | Precocious Neonatal Mortality use Early Neonatal Mortality               | 
              | Preconception Care               | 
              | Preconception Injuries               | 
              | Precursor B-Cell Lymphoblastic Leukemia-Lymphoma               | 
              | Precursor B-Lymphocytes use Precursor Cells, B-Lymphoid               | 
              | Precursor Cell Lymphoblastic Leukemia-Lymphoma               | 
              | Precursor Cells, B-Lymphoid               | 
              | Precursor Cells, T-Lymphoid               | 
              | Precursor RNA use RNA Precursors               | 
              | Precursor T-Cell Lymphoblastic Leukemia-Lymphoma               | 
              | Predator Chain use Food Chain               | 
              | Predatory Behavior               | 
              | Predental Education use Education, Predental               | 
              | Prediabetes use Prediabetic State               | 
              | Prediabetic State               | 
              | Predictive Value use Predictive Value of Tests               | 
              | Predictive Value of Tests               | 
              | Predisaster Mitigation use Prevention and Mitigation               | 
              | Predisposing Factors use Causality               | 
              | Prednacinolone use Desonide               | 
              | Prednimustine               | 
              | Prednisolone               | 
              | Prednisone               | 
              | Preening use Grooming               | 
              | Preferred Provider Organizations               | 
              | Prefilters               | 
              | Prefiltration               | 
              | Prefrontal Cortex               | 
              | Pregnadienediols               | 
              | Pregnadienes               | 
              | Pregnadienetriols               | 
              | Pregnancy               | 
              | Pregnancy Complications               | 
              | Pregnancy Complications, Cardiovascular               | 
              | Pregnancy Complications, Hematologic               | 
              | Pregnancy Complications, Infectious               | 
              | Pregnancy Complications, Neoplastic               | 
              | Pregnancy Complications, Parasitic               | 
              | Pregnancy in Adolescence               | 
              | Pregnancy in Diabetics               | 
              | Pregnancy in Phenylketonuria use Phenylketonuria, Maternal               | 
              | Pregnancy Luteoma use Luteoma               | 
              | Pregnancy Maintenance               | 
              | Pregnancy Nutrition use Prenatal Nutritional Physiological Phenomena               | 
              | Pregnancy Outcome               | 
              | Pregnancy Proteins               | 
              | Pregnancy Rate               | 
              | Pregnancy Reduction, Multifetal               | 
              | Pregnancy Tests               | 
              | Pregnancy Tests, Immunologic               | 
              | Pregnancy Trimester, First               | 
              | Pregnancy Trimester, Second               | 
              | Pregnancy Trimester, Third               | 
              | Pregnancy Trimesters               | 
              | Pregnancy, Abdominal               | 
              | Pregnancy, Adolescent use Pregnancy in Adolescence               | 
              | Pregnancy, Animal               | 
              | Pregnancy, Ectopic               | 
              | Pregnancy, First Trimester use Pregnancy Trimester, First               | 
              | Pregnancy, High-Risk               | 
              | Pregnancy, Molar use Hydatidiform Mole               | 
              | Pregnancy, Multiple               | 
              | Pregnancy, Prolonged               | 
              | Pregnancy, Second Trimester use Pregnancy Trimester, Second               | 
              | Pregnancy, Teenage use Pregnancy in Adolescence               | 
              | Pregnancy, Third Trimester use Pregnancy Trimester, Third               | 
              | Pregnancy, Tubal               | 
              | Pregnancy, Unplanned               | 
              | Pregnancy, Unwanted               | 
              | Pregnancy-Associated Alpha 2-Globulins use Pregnancy-Associated alpha 2-Macroglobulins               | 
              | Pregnancy-Associated Alpha 2-Glycoproteins use Pregnancy-Associated alpha 2-Macroglobulins               | 
              | Pregnancy-Associated alpha 2-Macroglobulins               | 
              | Pregnancy-Associated Plasma Protein-A               | 
              | Pregnancy-Specific beta 1-Glycoprotein use Pregnancy-Specific beta 1-Glycoproteins               | 
              | Pregnancy-Specific beta 1-Glycoproteins               | 
              | Pregnanediol               | 
              | Pregnanediones               | 
              | Pregnanes               | 
              | Pregnanetriol               | 
              | Pregnanolone               | 
              | Pregnant Mare Serum Gonadotropins use Gonadotropins, Equine               | 
              | Pregnant Women               | 
              | Pregnatrienes               | 
              | Pregnenediones               | 
              | Pregnenes               | 
              | Pregneninolone use Ethisterone               | 
              | Pregnenolone               | 
              | Pregnenolone Carbonitrile               | 
              | Prehospital Care               | 
              | Prehospital Emergency Care use Emergency Medical Services               | 
              | Prehospital Services               | 
              | Prehypertension               | 
              | Preimplantation Diagnosis               | 
              | Preimplantation Embryo Development use Embryonic Development               | 
              | Preimplantation Genetic Diagnosis use Preimplantation Diagnosis               | 
              | Prejudice               | 
              | Prekallikrein               | 
              | Preleukemia               | 
              | Prelingual Deafness use Deafness               | 
              | Premarital Examinations               | 
              | Premature Aging use Aging, Premature               | 
              | Premature Atrial Beats use Atrial Premature Complexes               | 
              | Premature Atrial Contractions use Atrial Premature Complexes               | 
              | Premature Beats use Cardiac Complexes, Premature               | 
              | Premature Birth               | 
              | Premature Cardiac Complexes use Cardiac Complexes, Premature               | 
              | Premature Rupture of Membrane (Pregnancy) use Fetal Membranes, Premature Rupture               | 
              | Premature Stop Codon use Codon, Nonsense               | 
              | Premature Supraventricular Beats use Atrial Premature Complexes               | 
              | Premature Ventricular Beats use Ventricular Premature Complexes               | 
              | Premature Ventricular Contractions use Ventricular Premature Complexes               | 
              | Premedical Education use Education, Premedical               | 
              | Premedication               | 
              | Premedication, Antibiotic use Antibiotic Prophylaxis               | 
              | Premenopause               | 
              | Premenstrual Syndrome               | 
              | Premenstrual Tension use Premenstrual Syndrome               | 
              | Premolar use Bicuspid               | 
              | Prenalterol               | 
              | Prenanthes serpentaria use Nabalus serpentaria               | 
              | Prenatal Care               | 
              | Prenatal Diagnosis               | 
              | Prenatal Diagnosis, Ultrasonic use Ultrasonography, Prenatal               | 
              | Prenatal Exposure Delayed Effects               | 
              | Prenatal Injuries               | 
              | Prenatal Nutrition               | 
              | Prenatal Nutrition Physiology use Prenatal Nutritional Physiological Phenomena               | 
              | Prenatal Nutritional Physiological Phenomena               | 
              | Prenatal Structures use Embryonic Structures               | 
              | Prenazone               | 
              | Preneoplastic Conditions use Precancerous Conditions               | 
              | Prenylamine               | 
              | Prenylation               | 
              | Prenyltransferase use Dimethylallyltranstransferase               | 
              | Preoperative Care               | 
              | Preoperative Period               | 
              | Preoptic Area               | 
              | Preovulatory Phase use Follicular Phase               | 
              | Prepaid Dental Care use Insurance, Dental               | 
              | Prepaid Group Health Organizations use Health Maintenance Organizations               | 
              | Prepaid Group Practice use Group Practice, Prepaid               | 
              | Prepaid Health Plans               | 
              | Preparation Scales               | 
              | Prepared Foods               | 
              | Prepared Mustard               | 
              | Preparedness               | 
              | Prephenate Dehydratase               | 
              | Prephenate Dehydrogenase               | 
              | Prephenate Hydro-lyase use Prephenate Dehydratase               | 
              | Preprosthetic Oral Surgical Procedures use Oral Surgical Procedures, Preprosthetic               | 
              | Prepuce use Foreskin               | 
              | Presbycusis               | 
              | Presbyopia               | 
              | Presbytis use Cercopithecidae               | 
              | Preschool Education               | 
              | Prescribed Drugs use Prescription Drugs               | 
              | Prescription Drugs               | 
              | Prescription Fees               | 
              | Prescription Insurance use Insurance, Pharmaceutical Services               | 
              | Prescriptions               | 
              | Presenile Alzheimer Dementia use Alzheimer Disease               | 
              | Presenilin-1               | 
              | Presenilin-2               | 
              | Presenilins               | 
              | Presentation, Breech use Breech Presentation               | 
              | Presentation, Fetal use Labor Presentation               | 
              | Preservation, Biological               | 
              | Preservation, Food use Food Preservation               | 
              | Preservatives in Cosmetics use Additives in Cosmetics               | 
              | Preservatives, Pharmaceutical               | 
              | Press               | 
              | Press Filters               | 
              | Pressoreceptors               | 
              | Pressure               | 
              | Pressure Conduits use Pressure Waterpipe Networks               | 
              | Pressure Filters               | 
              | Pressure Reducing Valves               | 
              | Pressure Regulators use Pressure Reducing Valves               | 
              | Pressure Sore use Pressure Ulcer               | 
              | Pressure Suits use Gravity Suits               | 
              | Pressure Systems               | 
              | Pressure Ulcer               | 
              | Pressure Waterpipe Networks               | 
              | Presumed Consent               | 
              | Presynaptic Receptors use Receptors, Presynaptic               | 
              | Presynaptic Terminals               | 
              | Presyncope use Syncope               | 
              | Preteen Pregnancy use Pregnancy in Adolescence               | 
              | Preterm Labor use Obstetric Labor, Premature               | 
              | Preternatural Human Combustibility use Spontaneous Combustion               | 
              | Pretreatment               | 
              | Prevalence               | 
              | Prevalence Rate use Prevalence               | 
              | Prevalence Ratio               | 
              | Prevalence Studies use Cross-Sectional Studies               | 
              | Prevention and Mitigation               | 
              | Prevention of Communicable Diseases use Communicable Disease Prevention               | 
              | Prevention, Primary use Primary Prevention               | 
              | Preventive Care use Preventive Health Services               | 
              | Preventive Dentistry               | 
              | Preventive Health Services               | 
              | Preventive Maintenance               | 
              | Preventive Medicine               | 
              | Preventive Psychiatry               | 
              | Preventive Services use Preventive Health Services               | 
              | Previous Analysis of Products               | 
              | Prevotella               | 
              | Prevotella intermedia               | 
              | Prevotella melaninogenica               | 
              | Prevotella nigrescens               | 
              | Prevotella ruminicola               | 
              | Prewarning               | 
              | Prey use Hunt               | 
              | Priapism               | 
              | Price Lists               | 
              | Prickly Datura use Datura metel               | 
              | Prickly Poppy use Argemone               | 
              | Prickly-Pear Cactus use Opuntia               | 
              | Pricklyburr use Datura metel               | 
              | Prilocaine               | 
              | Primaclone use Primidone               | 
              | Primaquine               | 
              | Primary Action use Primary Effect               | 
              | Primary Amine Oxidoreductases use Oxidoreductases Acting on CH-NH2 Group Donors               | 
              | Primary Care use Primary Health Care               | 
              | Primary Care Nursing               | 
              | Primary Care Physicians use Physicians, Primary Care               | 
              | Primary CNS Vasculitis use Vasculitis, Central Nervous System               | 
              | Primary Dysautonomias               | 
              | Primary Effect               | 
              | Primary Effluents               | 
              | Primary Effusion Lymphoma use Lymphoma, Primary Effusion               | 
              | Primary Environmental Health               | 
              | Primary Graft Dysfunction               | 
              | Primary Health Care               | 
              | Primary Hypokalemic Periodic Paralysis use Hypokalemic Periodic Paralysis               | 
              | Primary Impact               | 
              | Primary Myelofibrosis               | 
              | Primary Nursing               | 
              | Primary Nursing Care use Primary Nursing               | 
              | Primary Ovarian Insufficiency               | 
              | Primary Parkinsonism use Parkinson Disease               | 
              | Primary Prevention               | 
              | Primary Progressive Nonfluent Aphasia               | 
              | Primary RNA Transcript use RNA Precursors               | 
              | Primary Sedimentation               | 
              | Primary Tooth use Tooth, Deciduous               | 
              | Primary Treatment               | 
              | Primary Treatment Plants               | 
              | Primary Wave use p Wave               | 
              | Primase use DNA Primase               | 
              | Primate Diseases               | 
              | Primate Immunodeficiency Viruses use Lentiviruses, Primate               | 
              | Primate T-lymphotropic virus 1               | 
              | Primate T-lymphotropic virus 2               | 
              | Primate T-lymphotropic virus 3               | 
              | Primates               | 
              | Primed In Situ Labeling               | 
              | Primidone               | 
              | Primiparity use Parity               | 
              | Primitive Gut use Gastrula               | 
              | Primitive Streak               | 
              | Primrose use Primula               | 
              | Primrose, Evening use Oenothera biennis               | 
              | Primula               | 
              | Primula farinosa               | 
              | Primula lactea use Androsace lactea               | 
              | Primula obconica               | 
              | Primula officinalis use Primula veris               | 
              | Primula veris               | 
              | Primulaceae               | 
              | Prince Edward Island               | 
              | Prince's Pine use Chimaphila maculata               | 
              | Principal Component Analysis               | 
              | Principle-Based Ethics               | 
              | Prindolol use Pindolol               | 
              | Prinos verticillatus               | 
              | PRINS use Primed In Situ Labeling               | 
              | Printed Circuit Boards               | 
              | Printers' Marks               | 
              | Printing               | 
              | Printing Companies use Printing Industry               | 
              | Printing Industry               | 
              | Printing Workshops use Printing Industry               | 
              | Prinzmetal Angina use Angina Pectoris, Variant               | 
              | Prion Diseases               | 
              | Prion Proteins use Prions               | 
              | Prions               | 
              | Prionurus australis use Buthus australis               | 
              | Priorities, Health use Health Priorities               | 
              | Priority Groups use Health Priorities               | 
              | Prison Sanitation               | 
              | Prisoner of War               | 
              | Prisoner's Dilemma use Game Theory               | 
              | Prisoners               | 
              | Prisons               | 
              | Pristinamycin               | 
              | Privacy               | 
              | Privacy Act use Privacy               | 
              | Privacy of Patient Data use Confidentiality               | 
              | Privacy of Space use Personal Space               | 
              | Private Enterprise use Private Sector               | 
              | Private Health Care Coverage               | 
              | Private Hospitals use Hospitals, Private               | 
              | Private Management               | 
              | Private Practice               | 
              | Private Rooms use Patients' Rooms               | 
              | Private Sector               | 
              | Privatization               | 
              | Privet use Ligustrum               | 
              | Privileged Communication use Confidentiality               | 
              | PRL-Secreting Pituitary Adenoma use Prolactinoma               | 
              | PRO Professional Review Organizations use Professional Review Organizations               | 
              | Pro-Apoptotic Proteins use Apoptosis Regulatory Proteins               | 
              | Pro-Opiocortin use Pro-Opiomelanocortin               | 
              | Pro-Opiomelanocortin               | 
              | Pro-Opiomelanocortin Converting Enzyme use Proprotein Convertases               | 
              | Proaccelerin use Factor V               | 
              | Proactive Inhibition               | 
              | Proadifen               | 
              | Proalbumin use Prealbumin               | 
              | Proanthocyanidins               | 
              | Proazamine use Promethazine               | 
              | Probabilistic Models use Models, Statistical               | 
              | Probability               | 
              | Probability Learning               | 
              | Probability Theory               | 
              | Probable Maximum Precipitation               | 
              | Probable Precipitation               | 
              | Probe               | 
              | Probenecid               | 
              | Probiotics               | 
              | Problem Solving               | 
              | Problem-Based Learning               | 
              | Problem-Oriented Medical Records use Medical Records, Problem-Oriented               | 
              | Problems and Exercises               | 
              | Proboscidea Mammal               | 
              | Proboscidea Plant use Pedaliaceae               | 
              | Probucol               | 
              | Procainamide               | 
              | Procaine               | 
              | Procaine Amide use Procainamide               | 
              | Procambarus use Astacoidea               | 
              | Procarbazine               | 
              | Procaterol               | 
              | Procedural Law               | 
              | Process Assessment (Health Care)               | 
              | Processes of Substances, Products and Materials               | 
              | Processing Centre               | 
              | Procetofen use Fenofibrate               | 
              | Prochlorococcus               | 
              | Prochloron               | 
              | Prochlorophytes               | 
              | Prochlorothrix               | 
              | Prochlorperazine               | 
              | Procollagen               | 
              | Procollagen N-Endopeptidase               | 
              | Procollagen Peptidase use Procollagen N-Endopeptidase               | 
              | Procollagen Type I use Collagen Type I               | 
              | Procollagen-Lysine, 2-Oxoglutarate 5-Dioxygenase               | 
              | Procollagen-Proline Dioxygenase               | 
              | Procolobus use Colobus               | 
              | Proconvertin use Factor VII               | 
              | Proctitis               | 
              | Proctocolectomy, Restorative               | 
              | Proctocolitis               | 
              | Proctocolitis, Hemorrhagic use Proctocolitis               | 
              | Proctocolitis, Ulcerative use Proctocolitis               | 
              | Proctology use Colorectal Surgery               | 
              | Proctoscopes               | 
              | Proctoscopic Surgical Procedures use Proctoscopy               | 
              | Proctoscopy               | 
              | Proctosigmoiditis use Proctocolitis               | 
              | Proctosigmoidoscopy use Sigmoidoscopy               | 
              | Procyclidine               | 
              | Procyon use Raccoons               | 
              | Procyonidae               | 
              | PROD use Cytochrome P-450 CYP2B1               | 
              | Prodigiosin               | 
              | Prodigiozan               | 
              | Prodine use Alphaprodine               | 
              | Prodrugs               | 
              | Produce, Agricultural use Crops, Agricultural               | 
              | Product Containers use Product Packaging               | 
              | Product Labeling               | 
              | Product Labeling, Drug use Drug Labeling               | 
              | Product Labeling, Food use Food Labeling               | 
              | Product Line Management               | 
              | Product Packaging               | 
              | Product Recalls and Withdrawals               | 
              | Product Recycling use Equipment Reuse               | 
              | Product Release               | 
              | Product Storage               | 
              | Product Surveillance, Postmarketing               | 
              | Product Synthesis               | 
              | Product Withdrawal use Product Recalls and Withdrawals               | 
              | Product Withdrawal from Market use Product Recalls and Withdrawals               | 
              | Production of Products               | 
              | Production of Substances, Products and Materials               | 
              | Productivity use Efficiency               | 
              | Productivity, Organizational use Efficiency, Organizational               | 
              | Products Advertising Control use Products Publicity Control               | 
              | Products Arrest               | 
              | Products Commerce               | 
              | Products Commerce Suspension use Products Suspension               | 
              | Products Commercialization use Products Commerce               | 
              | Products Distribution               | 
              | Products Exportation use Exportation of Products               | 
              | Products for Amateur Gardening use Gardening Products               | 
              | Products for Bath and Immersion               | 
              | Products for Bathing and Immersion use Products for Bath and Immersion               | 
              | Products for Beard               | 
              | Products for Eye Areas               | 
              | Products for Facial Makeup               | 
              | Products for Gardening use Gardening Products               | 
              | Products for Lips use Lip Products               | 
              | Products for Nails and Cuticles               | 
              | Products for Oral and Dental Hygiene use Oral and Dental Hygiene Products               | 
              | Products for Ornamental Plants use Gardening Products               | 
              | Products for Personal Hygiene use Personal Hygiene Products               | 
              | Products for Professional Use use Products of Institution Restricted Sale               | 
              | Products for SkinTanning use Skin Tannings               | 
              | Products Importation use Importation of Products               | 
              | Products Manufacturing Suspension use Products Suspension               | 
              | Products of Confectionery use Foods of Confectionery               | 
              | Products of Consumer Direct Sale               | 
              | Products of Direct Sale to Consumer use Products of Consumer Direct Sale               | 
              | Products of Free Sale use Products of Consumer Direct Sale               | 
              | Products of Institution Restricted Sale               | 
              | Products of Non-Professional Use use Products of Consumer Direct Sale               | 
              | Products of Restricted Sale for Enterprises use Products of Institution Restricted Sale               | 
              | Products of Restricted Sale for Entities use Products of Institution Restricted Sale               | 
              | Products of Restricted Sale to Institution use Products of Institution Restricted Sale               | 
              | Products of Risk I use Risk Grade I               | 
              | Products of Risk II use Risk Grade II               | 
              | Products Production use Production of Products               | 
              | Products Promotion Control use Products Publicity Control               | 
              | Products Publicity Control               | 
              | Products Registration               | 
              | Products Registration Certificate               | 
              | Products Registration Certification use Products Registration Certificate               | 
              | Products Retention use Products Arrest               | 
              | Products Suspension               | 
              | Products Technology               | 
              | Products Transport               | 
              | Products with Antimicrobial Action               | 
              | Products Withdrawn from Market use Product Recalls and Withdrawals               | 
              | Proenzymes use Enzyme Precursors               | 
              | Proerythroblasts use Erythroblasts               | 
              | Proestrus               | 
              | Professional Activity Study use Commission on Professional and Hospital Activities               | 
              | Professional Agencies use Professional Associations               | 
              | Professional Associations               | 
              | Professional Autonomy               | 
              | Professional Clinic use Professional Practice               | 
              | Professional Competence               | 
              | Professional Corporations               | 
              | Professional Delegation use Delegation, Professional               | 
              | Professional Impairment               | 
              | Professional Liability use Liability, Legal               | 
              | Professional Misconduct               | 
              | Professional Practice               | 
              | Professional Practice Location               | 
              | Professional Review Organizations               | 
              | Professional Role               | 
              | Professional Staff Committees               | 
              | Professional Standards Review Organizations use Professional Review Organizations               | 
              | Professional Training               | 
              | Professional-Family Relations               | 
              | Professional-Patient Relations               | 
              | Professionals use Professional Associations               | 
              | Professions use Occupations               | 
              | Professor-Weed use Galega officinalis               | 
              | Professorweed use Galega officinalis               | 
              | Profibrinolysin use Plasminogen               | 
              | Profilins               | 
              | Proflavine               | 
              | Progastricsin use Pepsinogen C               | 
              | Progenitor B-Lymphocytes use Precursor Cells, B-Lymphoid               | 
              | Progenitor Cells use Stem Cells               | 
              | Progenitor Cells, Erythropoietic use Erythroid Precursor Cells               | 
              | Progenitor Cells, Hematopoietic use Hematopoietic Stem Cells               | 
              | Progeria               | 
              | Progeria, Adult use Werner Syndrome               | 
              | Progeria-Like Syndrome use Cockayne Syndrome               | 
              | Progesterone               | 
              | Progesterone Congeners               | 
              | Progesterone Receptors use Receptors, Progesterone               | 
              | Progesterone Reductase               | 
              | Progesterone-Binding Globulin               | 
              | Progestin Receptors use Receptors, Progesterone               | 
              | Progestins               | 
              | Progestogens use Progestins               | 
              | Proglucagon               | 
              | Proglumide               | 
              | Prognathism               | 
              | Prognosis               | 
              | Prognostic Nutritional Index (PNI) use Nutrition Assessment               | 
              | Prognostic Observations use Clinical-Dynamic Prognosis in Homeopathy               | 
              | Progonoma, Melanotic use Neuroectodermal Tumor, Melanotic               | 
              | Program Accreditation               | 
              | Program Development               | 
              | Program Efficiency use Efficiency, Organizational               | 
              | Program Evaluation               | 
              | Program Evaluation and Review Technique use Critical Path Method               | 
              | Program Evaluation, Nursing use Nursing Evaluation Research               | 
              | Program for Incentives and Benefits               | 
              | Program of Risk Prevention on Working Environment               | 
              | Programmable Implantable Insulin Pump use Insulin Infusion Systems               | 
              | Programmable Implantable Medication Systems use Infusion Pumps, Implantable               | 
              | Programmed Instruction               | 
              | Programmed Instruction as Topic               | 
              | Programmed Instruction, Computerized use Computer-Assisted Instruction               | 
              | Programmed Learning use Programmed Instruction as Topic               | 
              | Programming               | 
              | Programming Languages               | 
              | Programming, Linear               | 
              | Programs               | 
              | Programs as Topic use Programming               | 
              | Programs of Study               | 
              | Progranulocytic Leukemia use Leukemia, Promyelocytic, Acute               | 
              | Progression-Free Survival use Disease-Free Survival               | 
              | Progressive Interstitial Pneumonia of Sheep use Pneumonia, Progressive Interstitial, of Sheep               | 
              | Progressive Intracranial Occlusive Arteropathy (Moyamoya) use Moyamoya Disease               | 
              | Progressive Multifocal Leukoencephalopathy use Leukoencephalopathy, Progressive Multifocal               | 
              | Progressive Muscular Atrophy use Muscular Atrophy, Spinal               | 
              | Progressive Myoclonic Epilepsy, Lafora Type use Lafora Disease               | 
              | Progressive Nonfluent Aphasia use Primary Progressive Nonfluent Aphasia               | 
              | Progressive Patient Care               | 
              | Progressive Scale               | 
              | Progressive Supranuclear Ophthalmoplegia use Supranuclear Palsy, Progressive               | 
              | Progressive Torsion Spasm use Dystonia Musculorum Deformans               | 
              | Proguanil               | 
              | Prohibited Substances in Cosmetics use Additives in Cosmetics               | 
              | Prohibited Substances in Sanitizing use Additives in Sanitizing Products               | 
              | Prohormone Convertase, PC2 use Proprotein Convertase 2               | 
              | Prohormone Convertase, PC5 use Proprotein Convertase 5               | 
              | Prohormone Convertases use Proprotein Convertases               | 
              | Proinsulin               | 
              | Proinsulin C-Peptide use C-Peptide               | 
              | Project Analysis use Programming               | 
              | Project Evaluation use Program Evaluation               | 
              | Project Formulation               | 
              | Project Reports               | 
              | Projection               | 
              | Projections and Predictions use Forecasting               | 
              | Projective Techniques               | 
              | Projects               | 
              | Prokaryotic Cells               | 
              | Prokaryotic Initiation Factor-1               | 
              | Prokaryotic Initiation Factor-2               | 
              | Prokaryotic Initiation Factor-3               | 
              | Prokaryotic Initiation Factors               | 
              | Prolactin               | 
              | Prolactin Hypersecretion Syndrome use Hyperprolactinemia               | 
              | Prolactin Receptors use Receptors, Prolactin               | 
              | Prolactin Release-Inhibiting Factors               | 
              | Prolactin, Inappropriate Secretion use Hyperprolactinemia               | 
              | Prolactin-Releasing Hormone               | 
              | Prolactinoma               | 
              | Prolamins               | 
              | Prolapse               | 
              | Prolapsed Disk use Intervertebral Disk Displacement               | 
              | Prolidase Deficiency               | 
              | Proliferating Cell Nuclear Antigen               | 
              | Proline               | 
              | Proline Dehydrogenase use Proline Oxidase               | 
              | Proline Hydroxylase use Procollagen-Proline Dioxygenase               | 
              | Proline Oxidase               | 
              | Proline,2-Oxoglutarate 4-Dioxygenase use Procollagen-Proline Dioxygenase               | 
              | Proline-Directed Protein Kinases               | 
              | Proline-Rich Protein Domains               | 
              | Proline-Specific tRNA use RNA, Transfer, Pro               | 
              | Prolonged Aeration Activated Sludges               | 
              | Prolonged-Action Preparations use Delayed-Action Preparations               | 
              | Prolyl Isomerase use Peptidylprolyl Isomerase               | 
              | Prolyl-Leucyl-Glycinamide use MSH Release-Inhibiting Hormone               | 
              | Prolymphocytic Leukemia use Leukemia, Prolymphocytic               | 
              | Promazine               | 
              | Promedol               | 
              | Promegestone               | 
              | Promestone use Promegestone               | 
              | Prometaphase               | 
              | Promethazine               | 
              | Promethium               | 
              | Prometryne               | 
              | Promonocytes use Monocyte-Macrophage Precursor Cells               | 
              | Promoter Regions, Genetic               | 
              | Promotion of Health use Health Promotion               | 
              | Promyelocytes use Granulocyte Precursor Cells               | 
              | Promyelocytic Leukemia, Acute use Leukemia, Promyelocytic, Acute               | 
              | Pronase               | 
              | Pronation               | 
              | Prone Position               | 
              | Pronormoblasts use Erythroblasts               | 
              | Pronuclear Stage Transfer use Zygote Intrafallopian Transfer               | 
              | PROPAC use Prospective Payment Assessment Commission               | 
              | Propafenone               | 
              | Propaganda               | 
              | Propane               | 
              | Propanedial use Malondialdehyde               | 
              | Propanediol Dehydratase               | 
              | Propanediols use Propylene Glycols               | 
              | Propanidid               | 
              | Propanil               | 
              | Propanol use 1-Propanol               | 
              | Propanolamines               | 
              | Propanolide use Propiolactone               | 
              | Propanols               | 
              | Propantheline               | 
              | Propellant Gas use Gas for Packing               | 
              | Propene Polymers use Polypropylenes               | 
              | Propensity Score               | 
              | Propenylacrylic Acid use Sorbic Acid               | 
              | Properdin               | 
              | Properdin Factor B use Complement Factor B               | 
              | Properdin Factor D use Complement Factor D               | 
              | Properdin Pathway use Complement Pathway, Alternative               | 
              | Prophage Excision use Virus Activation               | 
              | Prophage Induction use Virus Activation               | 
              | Prophage Integration use Lysogeny               | 
              | Prophages               | 
              | Prophase               | 
              | Propheniramine use Pheniramine               | 
              | Prophenpyridamine use Pheniramine               | 
              | Propidium               | 
              | Propilin use Fimbriae Proteins               | 
              | Propiodone use Propyliodone               | 
              | Propiolactone               | 
              | Propionates               | 
              | Propionibacteriaceae               | 
              | Propionibacterium               | 
              | Propionibacterium acnes               | 
              | Propionic Acidemia               | 
              | Propionic Acids               | 
              | Propionicacidemia use Propionic Acidemia               | 
              | Propionigenium               | 
              | Propionyl-CoA Carboxylase use Methylmalonyl-CoA Decarboxylase               | 
              | Propionyl-CoA Carboxylase Deficiency use Propionic Acidemia               | 
              | Propiophenones               | 
              | Propitocaine use Prilocaine               | 
              | Proplast               | 
              | Propofol               | 
              | Propolis               | 
              | Proportional Hazards Models               | 
              | Propoxur               | 
              | Propoxycaine               | 
              | Propoxyprocaine use Propoxycaine               | 
              | Propranolol               | 
              | Proprietary Drug Name               | 
              | Proprietary Drug Names use Proprietary Drug Name               | 
              | Proprietary Name (Drug) use Proprietary Drug Name               | 
              | Proprioception               | 
              | Proprioceptive Disorders use Somatosensory Disorders               | 
              | Proprotein Convertase use Proprotein Convertases               | 
              | Proprotein Convertase 1               | 
              | Proprotein Convertase 2               | 
              | Proprotein Convertase 5               | 
              | Proprotein Convertases               | 
              | Proptosis use Exophthalmos               | 
              | Propyl Gallate               | 
              | Propyladiphenin use Proadifen               | 
              | Propylamine Transferase use Spermidine Synthase               | 
              | Propylamines               | 
              | Propylaminum               | 
              | Propylbenzilylcholine Mustard               | 
              | Propylene Glycol               | 
              | Propylene Glycols               | 
              | Propylene Polymers use Polypropylenes               | 
              | Propyliodone               | 
              | Propylthiouracil               | 
              | Proscillaridin               | 
              | Proscillaridin A use Proscillaridin               | 
              | Prosencephalon               | 
              | Prosimii use Strepsirhini               | 
              | Prosopagnosia               | 
              | Prosopis               | 
              | Prosoposibiography use Biopathographical History               | 
              | Prospective Payment Assessment Commission               | 
              | Prospective Payment System               | 
              | Prospective Pricing use Prospective Payment System               | 
              | Prospective Reimbursement use Prospective Payment System               | 
              | Prospective Studies               | 
              | Prospectuses               | 
              | Prospidin use Prospidium               | 
              | Prospidium               | 
              | PROST use Zygote Intrafallopian Transfer               | 
              | Prostacyclin use Epoprostenol               | 
              | Prostacyclin Receptor use Receptors, Epoprostenol               | 
              | Prostaglandin A Analogs use Prostaglandins A, Synthetic               | 
              | Prostaglandin Analogs use Prostaglandins, Synthetic               | 
              | Prostaglandin Antagonists               | 
              | Prostaglandin D2               | 
              | Prostaglandin delta-13-Reductase use 15-Oxoprostaglandin 13-Reductase               | 
              | Prostaglandin E Analogs use Prostaglandins E, Synthetic               | 
              | Prostaglandin E Receptors use Receptors, Prostaglandin E               | 
              | Prostaglandin E1 use Alprostadil               | 
              | Prostaglandin E2 use Dinoprostone               | 
              | Prostaglandin E2Alpha use Dinoprostone               | 
              | Prostaglandin Endoperoxide Analogs use Prostaglandin Endoperoxides, Synthetic               | 
              | Prostaglandin Endoperoxide Synthase Inhibitors use Cyclooxygenase Inhibitors               | 
              | Prostaglandin Endoperoxides               | 
              | Prostaglandin Endoperoxides, Synthetic               | 
              | Prostaglandin F Analogs use Prostaglandins F, Synthetic               | 
              | Prostaglandin F2 use Dinoprost               | 
              | Prostaglandin F2alpha use Dinoprost               | 
              | Prostaglandin H Synthase use Prostaglandin-Endoperoxide Synthases               | 
              | Prostaglandin H Synthase-1 use Cyclooxygenase 1               | 
              | Prostaglandin H2               | 
              | Prostaglandin H2 Receptor use Receptors, Thromboxane A2, Prostaglandin H2               | 
              | Prostaglandin I2 use Epoprostenol               | 
              | Prostaglandin Inhibitors use Prostaglandin Antagonists               | 
              | Prostaglandin Receptors use Receptors, Prostaglandin               | 
              | Prostaglandin Synthase use Prostaglandin-Endoperoxide Synthases               | 
              | Prostaglandin Synthase Inhibitors use Cyclooxygenase Inhibitors               | 
              | Prostaglandin Synthesis Antagonists use Cyclooxygenase Inhibitors               | 
              | Prostaglandin-13,14-Reductase use 15-Oxoprostaglandin 13-Reductase               | 
              | Prostaglandin-Endoperoxide Synthase use Prostaglandin-Endoperoxide Synthases               | 
              | Prostaglandin-Endoperoxide Synthases               | 
              | Prostaglandins               | 
              | Prostaglandins A               | 
              | Prostaglandins A, Synthetic               | 
              | Prostaglandins B               | 
              | Prostaglandins D               | 
              | Prostaglandins E               | 
              | Prostaglandins E, Synthetic               | 
              | Prostaglandins F               | 
              | Prostaglandins F, Synthetic               | 
              | Prostaglandins G               | 
              | Prostaglandins H               | 
              | Prostaglandins I               | 
              | Prostaglandins, Synthetic               | 
              | Prostanoic Acids               | 
              | Prostate               | 
              | Prostate Cancer use Prostatic Neoplasms               | 
              | Prostate-Specific Antigen               | 
              | Prostatectomy               | 
              | Prostatectomy, Retropubic use Prostatectomy               | 
              | Prostatectomy, Suprapubic use Prostatectomy               | 
              | Prostatectomy, Transurethral use Transurethral Resection of Prostate               | 
              | Prostatic Adenoma use Prostatic Hyperplasia               | 
              | Prostatic Diseases               | 
              | Prostatic Hyperplasia               | 
              | Prostatic Hyperplasia, Benign use Prostatic Hyperplasia               | 
              | Prostatic Hypertrophy use Prostatic Hyperplasia               | 
              | Prostatic Hypertrophy, Benign use Prostatic Hyperplasia               | 
              | Prostatic Intraepithelial Neoplasia               | 
              | Prostatic Neoplasms               | 
              | Prostatic Secretory Proteins               | 
              | Prostatism               | 
              | Prostatitis               | 
              | Prostheses and Implants               | 
              | Prosthesis use Prostheses and Implants               | 
              | Prosthesis Coloring               | 
              | Prosthesis Design               | 
              | Prosthesis Failure               | 
              | Prosthesis Failure Analysis use Equipment Failure Analysis               | 
              | Prosthesis Fitting               | 
              | Prosthesis Implantation               | 
              | Prosthesis Loosening use Prosthesis Failure               | 
              | Prosthesis, Dental use Dental Prosthesis               | 
              | Prosthesis, Heart Valve use Heart Valve Prosthesis               | 
              | Prosthesis-Related Infections               | 
              | Prosthodontics               | 
              | Prostitution               | 
              | Prostrate Sandmat use Euphorbia prostata               | 
              | Prostrate Spurge use Euphorbia prostata               | 
              | Protactinium               | 
              | Protamine Kinase               | 
              | Protamine Sulfate use Protamines               | 
              | Protamines               | 
              | Protea Plant use Proteaceae               | 
              | Proteaceae               | 
              | Protease Antagonists use Protease Inhibitors               | 
              | Protease Inhibitors               | 
              | Protease La               | 
              | Protease Nexins               | 
              | Protease Ti use Endopeptidase Clp               | 
              | Protease-Activated Receptor 1 use Receptor, PAR-1               | 
              | Proteases use Peptide Hydrolases               | 
              | Proteasome Endopeptidase Complex               | 
              | Protected Areas               | 
              | Protected Sex use Safe Sex               | 
              | Protected Springs               | 
              | Protectin use Antigens, CD59               | 
              | Protection               | 
              | Protective Agents               | 
              | Protective Clothing               | 
              | Protective Devices               | 
              | Protective Gloves use Gloves, Protective               | 
              | Proteidae               | 
              | Protein A use Staphylococcal Protein A               | 
              | Protein Arginine Methyltransferase use Protein-Arginine N-Methyltransferases               | 
              | Protein Array Analysis               | 
              | Protein Binding               | 
              | Protein Biosynthesis               | 
              | Protein C               | 
              | Protein C Deficiency               | 
              | Protein C Inhibitor               | 
              | Protein Carbonylation               | 
              | Protein Carboxylmethyltransferase use Protein O-Methyltransferase               | 
              | Protein Chips use Protein Array Analysis               | 
              | Protein Coding Region use Open Reading Frames               | 
              | Protein Conformation               | 
              | Protein Conformation, alpha-Helical use Protein Structure, Secondary               | 
              | Protein Conformation, beta-Sheet use Protein Structure, Secondary               | 
              | Protein Conformation, beta-Strand use Protein Structure, Secondary               | 
              | Protein D-Aspartate-L-Isoaspartate Methyltransferase               | 
              | Protein Databases use Databases, Protein               | 
              | Protein Deficiency               | 
              | Protein Denaturation               | 
              | Protein Disulfide Isomerase use Protein Disulfide-Isomerases               | 
              | Protein Disulfide Reductase (Glutathione)               | 
              | Protein Disulfide-Isomerase use Protein Disulfide-Isomerases               | 
              | Protein Disulfide-Isomerases               | 
              | Protein Domains use Protein Structure, Tertiary               | 
              | Protein Engineering               | 
              | Protein Fingerprinting use Peptide Mapping               | 
              | Protein Folding               | 
              | Protein Folding, Globular use Protein Folding               | 
              | Protein Foods use Foods for Persons Engaged in Physical Activities               | 
              | Protein Footprinting               | 
              | Protein Glycosylation use Glycosylation               | 
              | Protein Hydrolysates               | 
              | Protein Inhibitors of Activated STAT               | 
              | Protein Interaction Domains use Protein Interaction Domains and Motifs               | 
              | Protein Interaction Domains and Motifs               | 
              | Protein Interaction Mapping               | 
              | Protein Interaction Motifs use Protein Interaction Domains and Motifs               | 
              | Protein Introns use Inteins               | 
              | Protein Isoforms               | 
              | Protein Isoprenylation use Protein Prenylation               | 
              | Protein Kinase A use Cyclic AMP-Dependent Protein Kinases               | 
              | Protein Kinase A, Catalytic Subunits use Cyclic AMP-Dependent Protein Kinase Catalytic Subunits               | 
              | Protein Kinase A, RIalpha Subunit use Cyclic AMP-Dependent Protein Kinase RIalpha Subunit               | 
              | Protein Kinase A, RIbeta Subunit use Cyclic AMP-Dependent Protein Kinase RIbeta Subunit               | 
              | Protein Kinase A, RII alpha Subunit use Cyclic AMP-Dependent Protein Kinase RIIalpha Subunit               | 
              | Protein Kinase A, RII beta Subunit use Cyclic AMP-Dependent Protein Kinase RIIbeta Subunit               | 
              | Protein Kinase A, Type I use Cyclic AMP-Dependent Protein Kinase Type I               | 
              | Protein Kinase A, Type II use Cyclic AMP-Dependent Protein Kinase Type II               | 
              | Protein Kinase C               | 
              | Protein Kinase C-alpha               | 
              | Protein Kinase C-delta               | 
              | Protein Kinase C-epsilon               | 
              | Protein Kinase Inhibitors               | 
              | Protein Kinase PKR use eIF-2 Kinase               | 
              | Protein Kinase Type I, Cyclic AMP-Dependent use Cyclic AMP-Dependent Protein Kinase Type I               | 
              | Protein Kinase Type II, Cyclic AMP-Dependent use Cyclic AMP-Dependent Protein Kinase Type II               | 
              | Protein Kinase, RNA Activated use eIF-2 Kinase               | 
              | Protein Kinases               | 
              | Protein Lysine Methyltransferase use Histone-Lysine N-Methyltransferase               | 
              | Protein Malnutrition               | 
              | Protein Methylase I use Protein-Arginine N-Methyltransferases               | 
              | Protein Methylase II use Protein O-Methyltransferase               | 
              | Protein Methylase III use Histone-Lysine N-Methyltransferase               | 
              | Protein Methylases use Protein Methyltransferases               | 
              | Protein Methyltransferase I use Protein-Arginine N-Methyltransferases               | 
              | Protein Methyltransferase II use Protein O-Methyltransferase               | 
              | Protein Methyltransferase III use Histone-Lysine N-Methyltransferase               | 
              | Protein Methyltransferases               | 
              | Protein Microarrays use Protein Array Analysis               | 
              | Protein Microchips use Protein Array Analysis               | 
              | Protein Misfolding Disorders use Proteostasis Deficiencies               | 
              | Protein Modification, Co-Translational use Protein Modification, Translational               | 
              | Protein Modification, Post-Translational use Protein Processing, Post-Translational               | 
              | Protein Modification, Translational               | 
              | Protein Motifs use Amino Acid Motifs               | 
              | Protein Multimerization               | 
              | Protein NMR Spectroscopy use Nuclear Magnetic Resonance, Biomolecular               | 
              | Protein O-Methyltransferase               | 
              | Protein p34cdc2 use CDC2 Protein Kinase               | 
              | Protein Phosphatase 1               | 
              | Protein Phosphatase 2               | 
              | Protein Phosphatase-2B use Calcineurin               | 
              | Protein Phosphatases use Phosphoprotein Phosphatases               | 
              | Protein Precursors               | 
              | Protein Prenylation               | 
              | Protein Processing, Co-Translational use Protein Modification, Translational               | 
              | Protein Processing, Post-Translational               | 
              | Protein Processing, Translational use Protein Modification, Translational               | 
              | Protein Profiling Chips use Protein Array Analysis               | 
              | Protein Refolding               | 
              | Protein Renaturation               | 
              | Protein Requirement               | 
              | Protein S               | 
              | Protein S Deficiency               | 
              | Protein Sequence Analysis use Sequence Analysis, Protein               | 
              | Protein Sequence Databases use Databases, Protein               | 
              | Protein Sorting Signals               | 
              | Protein Splicing               | 
              | Protein Stability               | 
              | Protein Structural Homology use Structural Homology, Protein               | 
              | Protein Structure, Primary use Amino Acid Sequence               | 
              | Protein Structure, Quaternary               | 
              | Protein Structure, Secondary               | 
              | Protein Structure, Supersecondary use Amino Acid Motifs               | 
              | Protein Structure, Tertiary               | 
              | Protein Subunits               | 
              | Protein Synthesis Antagonists use Protein Synthesis Inhibitors               | 
              | Protein Synthesis Inhibitors               | 
              | Protein Translocation use Protein Transport               | 
              | Protein Transport               | 
              | Protein Tyrosine Kinase p56(lck) use Lymphocyte Specific Protein Tyrosine Kinase p56(lck)               | 
              | Protein Tyrosine Phosphatase, Non-Receptor Type 1               | 
              | Protein Tyrosine Phosphatase, Non-Receptor Type 11               | 
              | Protein Tyrosine Phosphatase, Non-Receptor Type 12               | 
              | Protein Tyrosine Phosphatase, Non-Receptor Type 13               | 
              | Protein Tyrosine Phosphatase, Non-Receptor Type 2               | 
              | Protein Tyrosine Phosphatase, Non-Receptor Type 22               | 
              | Protein Tyrosine Phosphatase, Non-Receptor Type 3               | 
              | Protein Tyrosine Phosphatase, Non-Receptor Type 4               | 
              | Protein Tyrosine Phosphatase, Non-Receptor Type 6               | 
              | Protein Tyrosine Phosphatase, Receptor Type A use Receptor-Like Protein Tyrosine Phosphatases, Class 4               | 
              | Protein Tyrosine Phosphatase, Receptor Type B use Receptor-Like Protein Tyrosine Phosphatases, Class 3               | 
              | Protein Tyrosine Phosphatase, Receptor Type D use Receptor-Like Protein Tyrosine Phosphatases, Class 2               | 
              | Protein Tyrosine Phosphatase, Receptor Type E use Receptor-Like Protein Tyrosine Phosphatases, Class 4               | 
              | Protein Tyrosine Phosphatase, Receptor Type F use Receptor-Like Protein Tyrosine Phosphatases, Class 2               | 
              | Protein Tyrosine Phosphatase, Receptor Type G use Receptor-Like Protein Tyrosine Phosphatases, Class 5               | 
              | Protein Tyrosine Phosphatase, Receptor Type H use Receptor-Like Protein Tyrosine Phosphatases, Class 3               | 
              | Protein Tyrosine Phosphatase, Receptor Type J use Receptor-Like Protein Tyrosine Phosphatases, Class 3               | 
              | Protein Tyrosine Phosphatase, Receptor Type K use Receptor-Like Protein Tyrosine Phosphatases, Class 2               | 
              | Protein Tyrosine Phosphatase, Receptor Type M use Receptor-Like Protein Tyrosine Phosphatases, Class 2               | 
              | Protein Tyrosine Phosphatase, Receptor Type N use Receptor-Like Protein Tyrosine Phosphatases, Class 8               | 
              | Protein Tyrosine Phosphatase, Receptor Type O use Receptor-Like Protein Tyrosine Phosphatases, Class 3               | 
              | Protein Tyrosine Phosphatase, Receptor Type Q use Receptor-Like Protein Tyrosine Phosphatases, Class 3               | 
              | Protein Tyrosine Phosphatase, Receptor Type R use Receptor-Like Protein Tyrosine Phosphatases, Class 7               | 
              | Protein Tyrosine Phosphatase, Receptor Type S use Receptor-Like Protein Tyrosine Phosphatases, Class 2               | 
              | Protein Tyrosine Phosphatase, Receptor Type T use Receptor-Like Protein Tyrosine Phosphatases, Class 2               | 
              | Protein Tyrosine Phosphatase, Receptor Type U use Receptor-Like Protein Tyrosine Phosphatases, Class 2               | 
              | Protein Tyrosine Phosphatase, Receptor Type V use Receptor-Like Protein Tyrosine Phosphatases, Class 3               | 
              | Protein Tyrosine Phosphatase, Receptor Type Z use Receptor-Like Protein Tyrosine Phosphatases, Class 5               | 
              | Protein Tyrosine Phosphatase, Receptor Type, C use Antigens, CD45               | 
              | Protein Tyrosine Phosphatases               | 
              | Protein Tyrosine Phosphatases, Non-Receptor               | 
              | Protein Unfolding               | 
              | Protein-Arginine N-Methyltransferase use Protein-Arginine N-Methyltransferases               | 
              | Protein-Arginine N-Methyltransferases               | 
              | Protein-Binding Radioassay use Radioligand Assay               | 
              | Protein-Bound Iodine Test use Thyroid Function Tests               | 
              | Protein-Calorie Malnutrition use Protein-Energy Malnutrition               | 
              | Protein-D-Aspartate Methyltransferase use Protein D-Aspartate-L-Isoaspartate Methyltransferase               | 
              | Protein-Energy Malnutrition               | 
              | Protein-Free Media use Culture Media, Serum-Free               | 
              | Protein-Glutamine gamma-Glutamyltransferases use Transglutaminases               | 
              | Protein-L-Isoaspartate-D-Aspartate-O-Methyltransferase use Protein D-Aspartate-L-Isoaspartate Methyltransferase               | 
              | Protein-Losing Enteropathies               | 
              | Protein-Lysine 6-Oxidase               | 
              | Protein-Protein Interaction Map use Protein Interaction Mapping               | 
              | Protein-Restricted Diet use Diet, Protein-Restricted               | 
              | Protein-Serine-Threonine Kinases               | 
              | Protein-Tyrosine Kinase TRKC use Receptor, trkC               | 
              | Protein-Tyrosine Kinases               | 
              | Protein-Tyrosine Kinases, src use src-Family Kinases               | 
              | Protein-Tyrosine-Phosphatase use Protein Tyrosine Phosphatases               | 
              | Proteinase Activated Receptor 2 use Receptor, PAR-2               | 
              | Proteinase Inhibitory Peptides, Secretory use Proteinase Inhibitory Proteins, Secretory               | 
              | Proteinase Inhibitory Proteins, Secretory               | 
              | Proteinase K use Endopeptidase K               | 
              | Proteinases use Peptide Hydrolases               | 
              | Proteins               | 
              | Proteins, Acute-Phase use Acute-Phase Proteins               | 
              | Proteins, Dietary use Dietary Proteins               | 
              | Proteins, Immediate-Early use Immediate-Early Proteins               | 
              | Proteins, Mitochondrial use Mitochondrial Proteins               | 
              | Proteins, Ribosomal use Ribosomal Proteins               | 
              | Proteinuria               | 
              | Proteles use Hyaenidae               | 
              | Proteobacteria               | 
              | Proteochondroitin Sulfates use Chondroitin Sulfate Proteoglycans               | 
              | Proteoglycans               | 
              | Proteolipid Protein, Myelin use Myelin Proteolipid Protein               | 
              | Proteolipids               | 
              | Proteolytic Enzymes use Peptide Hydrolases               | 
              | Proteome               | 
              | Proteomics               | 
              | Proteostasis Deficiencies               | 
              | Protestantism               | 
              | Proteus               | 
              | Proteus Infections               | 
              | Proteus mirabilis               | 
              | Proteus penneri               | 
              | Proteus Syndrome               | 
              | Proteus vulgaris               | 
              | Prothionamide               | 
              | Prothrombin               | 
              | Prothrombin Deficiency use Hypoprothrombinemias               | 
              | Prothrombin Time               | 
              | Protirelin use Thyrotropin-Releasing Hormone               | 
              | Protirelin Receptors use Receptors, Thyrotropin-Releasing Hormone               | 
              | Proto-Oncogene Protein c-ets-1               | 
              | Proto-Oncogene Protein c-ets-2               | 
              | Proto-Oncogene Protein c-fli-1               | 
              | Proto-Oncogene Protein c-hck use Proto-Oncogene Proteins c-hck               | 
              | Proto-Oncogene Protein c-yes use Proto-Oncogene Proteins c-yes               | 
              | Proto-Oncogene Protein erbB-3 use Receptor, erbB-3               | 
              | Proto-Oncogene Protein ets-1 use Proto-Oncogene Protein c-ets-1               | 
              | Proto-Oncogene Protein ets-2 use Proto-Oncogene Protein c-ets-2               | 
              | Proto-Oncogene Protein fms use Receptor, Macrophage Colony-Stimulating Factor               | 
              | Proto-Oncogene Protein HER-2 use Receptor, erbB-2               | 
              | Proto-Oncogene Protein Int-1 use Wnt1 Protein               | 
              | Proto-Oncogene Protein p185(neu) use Receptor, erbB-2               | 
              | Proto-Oncogene Protein p60(fyn) use Proto-Oncogene Proteins c-fyn               | 
              | Proto-Oncogene Protein trk use Receptor, trkA               | 
              | Proto-Oncogene Protein Wnt-1 use Wnt1 Protein               | 
              | Proto-Oncogene Protein Wnt-2 use Wnt2 Protein               | 
              | Proto-Oncogene Proteins               | 
              | Proto-Oncogene Proteins A-raf               | 
              | Proto-Oncogene Proteins B-raf               | 
              | Proto-Oncogene Proteins c-abl               | 
              | Proto-Oncogene Proteins c-akt               | 
              | Proto-Oncogene Proteins c-bcl-1 use Cyclin D1               | 
              | Proto-Oncogene Proteins c-bcl-2               | 
              | Proto-Oncogene Proteins c-bcl-6               | 
              | Proto-Oncogene Proteins c-bcr               | 
              | Proto-Oncogene Proteins c-cbl               | 
              | Proto-Oncogene Proteins c-crk               | 
              | Proto-Oncogene Proteins c-erbA use Thyroid Hormone Receptors alpha               | 
              | Proto-Oncogene Proteins c-ets               | 
              | Proto-Oncogene Proteins c-fes               | 
              | Proto-Oncogene Proteins c-fos               | 
              | Proto-Oncogene Proteins c-fyn               | 
              | Proto-Oncogene Proteins c-hck               | 
              | Proto-Oncogene Proteins c-jun               | 
              | Proto-Oncogene Proteins c-kit               | 
              | Proto-Oncogene Proteins c-maf               | 
              | Proto-Oncogene Proteins c-mdm2               | 
              | Proto-Oncogene Proteins c-met               | 
              | Proto-Oncogene Proteins c-mos               | 
              | Proto-Oncogene Proteins c-myb               | 
              | Proto-Oncogene Proteins c-myc               | 
              | Proto-Oncogene Proteins c-pim-1               | 
              | Proto-Oncogene Proteins c-raf               | 
              | Proto-Oncogene Proteins c-ras use Proto-Oncogene Proteins p21(ras)               | 
              | Proto-Oncogene Proteins c-rel               | 
              | Proto-Oncogene Proteins c-ret               | 
              | Proto-Oncogene Proteins c-sis               | 
              | Proto-Oncogene Proteins c-vav               | 
              | Proto-Oncogene Proteins c-yes               | 
              | Proto-Oncogene Proteins p21(ras)               | 
              | Proto-Oncogene Proteins pp60(c-src)               | 
              | Proto-Oncogenes               | 
              | Protocatechuate-3,4-Dioxygenase               | 
              | Protochlorophyllide               | 
              | Protochlorophyllide A use Protochlorophyllide               | 
              | Protocol Compliance use Guideline Adherence               | 
              | Protocol Drug Therapy, Computer-Assisted use Drug Therapy, Computer-Assisted               | 
              | Protocol Refugee               | 
              | Protocol-Directed Therapy, Computer-Assisted use Therapy, Computer-Assisted               | 
              | Protocollagen use Procollagen               | 
              | Protocollagen Lysyl Hydroxylase use Procollagen-Lysine, 2-Oxoglutarate 5-Dioxygenase               | 
              | Protocollagen Prolyl Hydroxylase use Procollagen-Proline Dioxygenase               | 
              | Protocols               | 
              | Protocols, Clinical use Clinical Protocols               | 
              | Protoheme use Heme               | 
              | Protomers use Protein Subunits               | 
              | Protomonas use Methylobacteriaceae               | 
              | Proton Pump Inhibitors               | 
              | Proton Pumps               | 
              | Proton-Coupled Folate Transporter               | 
              | Proton-Induced X-Ray Emission Spectrometry use Spectrometry, X-Ray Emission               | 
              | Proton-Motive Force               | 
              | Proton-Phosphate Symporters               | 
              | Proton-Translocating ATPase use Proton-Translocating ATPases               | 
              | Proton-Translocating ATPase Complex use Proton-Translocating ATPases               | 
              | Proton-Translocating ATPase Complexes use Proton-Translocating ATPases               | 
              | Proton-Translocating ATPases               | 
              | Protons               | 
              | Protoplasm use Cytoplasm               | 
              | Protoplasmic Streaming use Cytoplasmic Streaming               | 
              | Protoplasts               | 
              | Protoporphyria, Erythropoietic               | 
              | Protoporphyrinogen Oxidase               | 
              | Protoporphyrins               | 
              | Protosteliomycetes use Myxomycetes               | 
              | Prototheca               | 
              | Protoveratrines               | 
              | Protoverin use Protoveratrines               | 
              | Protozoal Infections, Central Nervous System use Central Nervous System Protozoal Infections               | 
              | Protozoan Antibodies use Antibodies, Protozoan               | 
              | Protozoan Antigens use Antigens, Protozoan               | 
              | Protozoan DNA use DNA, Protozoan               | 
              | Protozoan Genes use Genes, Protozoan               | 
              | Protozoan Genome use Genome, Protozoan               | 
              | Protozoan Infections               | 
              | Protozoan Infections, Animal               | 
              | Protozoan Proteins               | 
              | Protozoan RNA use RNA, Protozoan               | 
              | Protozoan Vaccines               | 
              | Protriptyline               | 
              | Protrusive Dome               | 
              | Proventriculus               | 
              | Prover               | 
              | Proverbs use Aphorisms and Proverbs               | 
              | Providencia               | 
              | Provider-Sponsored Organizations               | 
              | Provincial Government use State Government               | 
              | Provirus Integration use Virus Integration               | 
              | Proviruses               | 
              | Provision use Supply               | 
              | Provisional Draft Bill use Draft Bill               | 
              | Provisional Measures               | 
              | Provocation Tests, Bronchial use Bronchial Provocation Tests               | 
              | Provocation Tests, Nasal use Nasal Provocation Tests               | 
              | Proxemics use Spatial Behavior               | 
              | Proximal Renal Tubular Dysfunction use Fanconi Syndrome               | 
              | Proxy               | 
              | PrP 27-30 Protein               | 
              | PrP Proteins use Prions               | 
              | PrPC Proteins               | 
              | PRPP Synthetase use Ribose-Phosphate Pyrophosphokinase               | 
              | PrPSc Proteins               | 
              | PRRS use Porcine Reproductive and Respiratory Syndrome               | 
              | PRRSV use Porcine respiratory and reproductive syndrome virus               | 
              | Prune Belly Syndrome               | 
              | Prune, African use Pygeum               | 
              | Prunella               | 
              | Prunella vulgaris               | 
              | Prunus               | 
              | Prunus africana use Pygeum               | 
              | Prunus amygdalus use Amygdalae amarae Aqua               | 
              | Prunus armeniaca use Prunus               | 
              | Prunus domestica               | 
              | Prunus laurocerasus use Laurocerasus               | 
              | Prunus mahaleb               | 
              | Prunus padus               | 
              | Prunus persica use Amygdalus persica               | 
              | Prunus spinosa               | 
              | Prunus virginiana               | 
              | Prurigo               | 
              | Pruritus               | 
              | Pruritus Ani               | 
              | Pruritus Vulvae               | 
              | Prussia               | 
              | Prussian Blue Reaction               | 
              | Psacalium use Asteraceae               | 
              | Psalliota bispora use Agaricus campestris               | 
              | Psammomys use Gerbillinae               | 
              | PSDA use Patient Self-Determination Act               | 
              | Pseudacacia odorata use Robinia pseudacacia               | 
              | Pseudallescheria               | 
              | Pseudalopex use Foxes               | 
              | Pseudarthrosis               | 
              | Pseudo-Hurler Polydystrophy use Mucolipidoses               | 
              | Pseudo-Obstruction, Intestinal use Intestinal Pseudo-Obstruction               | 
              | Pseudoakathisia use Akathisia, Drug-Induced               | 
              | Pseudoaldosteronism use Liddle Syndrome               | 
              | Pseudoalteromonas               | 
              | Pseudoaneurysm use Aneurysm, False               | 
              | Pseudoaphakia use Cataract               | 
              | Pseudobulbar Palsy               | 
              | Pseudocholinesterase               | 
              | Pseudocoma use Coma               | 
              | Pseudocowpox virus               | 
              | Pseudocyesis use Pseudopregnancy               | 
              | Pseudodementia use Factitious Disorders               | 
              | Pseudodystonia use Dystonic Disorders               | 
              | Pseudoephedrine               | 
              | Pseudoexfoliation Syndrome use Exfoliation Syndrome               | 
              | Pseudogenes               | 
              | Pseudoglobulins use Serum Globulins               | 
              | Pseudoglucagonoma Syndrome use Necrolytic Migratory Erythema               | 
              | Pseudogout use Chondrocalcinosis               | 
              | Pseudohypoaldosteronism               | 
              | Pseudohypoaldosteronism Type 1 use Pseudohypoaldosteronism               | 
              | Pseudohypoaldosteronism Type 1, Autosomal Recessive use Pseudohypoaldosteronism               | 
              | Pseudohypoaldosteronism, Type I use Pseudohypoaldosteronism               | 
              | Pseudohypoaldosteronism, Type I, Autosomal Dominant use Pseudohypoaldosteronism               | 
              | Pseudohypoaldosteronism, Type I, Autosomal Recessive use Pseudohypoaldosteronism               | 
              | Pseudohypoaldosteronism, Type Ii use Pseudohypoaldosteronism               | 
              | Pseudohypoparathyroidism               | 
              | Pseudolymphoma               | 
              | Pseudomelia use Phantom Limb               | 
              | Pseudomeningitis use Meningism               | 
              | Pseudomonadaceae               | 
              | Pseudomonas               | 
              | Pseudomonas acidovorans use Delftia acidovorans               | 
              | Pseudomonas aeruginosa               | 
              | Pseudomonas alcaligenes               | 
              | Pseudomonas cepacia use Burkholderia cepacia               | 
              | Pseudomonas fluorescens               | 
              | Pseudomonas fragi               | 
              | Pseudomonas Infections               | 
              | Pseudomonas mallei use Burkholderia mallei               | 
              | Pseudomonas mendocina               | 
              | Pseudomonas oleovorans               | 
              | Pseudomonas phage 7s use Leviviridae               | 
              | Pseudomonas phage Pf1 use Bacteriophage Pf1               | 
              | Pseudomonas phage phi 6 use Bacteriophage phi 6               | 
              | Pseudomonas phage PP7 use Levivirus               | 
              | Pseudomonas Phages               | 
              | Pseudomonas pseudoalcaligenes               | 
              | Pseudomonas pseudomallei use Burkholderia pseudomallei               | 
              | Pseudomonas putida               | 
              | Pseudomonas pyocyanea use Pseudomonas aeruginosa               | 
              | Pseudomonas stutzeri               | 
              | Pseudomonas syringae               | 
              | Pseudomonas testosteroni use Comamonas testosteroni               | 
              | Pseudomonas Vaccines               | 
              | Pseudomonic Acid use Mupirocin               | 
              | Pseudomyotonia use Isaacs Syndrome               | 
              | Pseudomyxoma Peritonei               | 
              | Pseudoneurotic Schizophrenia use Schizotypal Personality Disorder               | 
              | Pseudonyms use Anonyms and Pseudonyms               | 
              | Pseudopelade use Alopecia               | 
              | Pseudophakia               | 
              | Pseudopleuronectes use Flounder               | 
              | Pseudopodia               | 
              | Pseudopolyarthritis, Rhizomelic use Polymyalgia Rheumatica               | 
              | Pseudopregnancy               | 
              | Pseudopseudohypoparathyroidism               | 
              | Pseudopsychopathic Schizophrenia use Schizotypal Personality Disorder               | 
              | Pseudopsychosis use Factitious Disorders               | 
              | Pseudorabies               | 
              | Pseudorabies Vaccines               | 
              | Pseudorabies virus use Herpesvirus 1, Suid               | 
              | Pseudorotaxanes use Rotaxanes               | 
              | Pseudosclerosis use Hepatolenticular Degeneration               | 
              | Pseudotsuga               | 
              | Pseudotuberculosis, Pasteurella use Yersinia pseudotuberculosis Infections               | 
              | Pseudotumor Cerebri               | 
              | Pseudotumor, Inflammatory use Granuloma, Plasma Cell               | 
              | Pseudouridine               | 
              | Pseudowintera               | 
              | Pseudoxanthoma Elasticum               | 
              | Psidium               | 
              | Psilocybe               | 
              | Psilocybine               | 
              | Psittacidae use Parrots               | 
              | Psittaciformes               | 
              | Psittacines use Psittaciformes               | 
              | Psittacosis               | 
              | Psittacula               | 
              | Psoas Abscess               | 
              | Psoas Muscles               | 
              | Psora use Psora in Homeopathy               | 
              | Psora in Homeopathy               | 
              | Psoralea               | 
              | Psoralea bituminosa               | 
              | Psoralen use Ficusin               | 
              | Psoralen Ultraviolet A Therapy use PUVA Therapy               | 
              | Psoralens               | 
              | Psoriasis               | 
              | Psoriasis Arthropathica use Arthritis, Psoriatic               | 
              | Psoriasis, Arthritic use Arthritis, Psoriatic               | 
              | Psoric Miasm use Psora in Homeopathy               | 
              | Psoric Symptoms               | 
              | Psoricum use Psorinum               | 
              | Psorinum               | 
              | Psoroptes use Psoroptidae               | 
              | Psoroptes ovis use Psoroptidae               | 
              | Psoroptidae               | 
              | Psorospermum use Clusiaceae               | 
              | PSRO use Professional Review Organizations               | 
              | Psychedelic Agents use Hallucinogens               | 
              | Psychiatric Aides               | 
              | Psychiatric Department, Hospital               | 
              | Psychiatric Hospital Orderlies use Psychiatric Aides               | 
              | Psychiatric Nursing               | 
              | Psychiatric Social Work use Social Work, Psychiatric               | 
              | Psychiatric Somatic Therapies               | 
              | Psychiatric Status Rating Scales               | 
              | Psychiatric Ward Attendants use Psychiatric Aides               | 
              | Psychiatry               | 
              | Psychiatry, Biological use Biological Psychiatry               | 
              | Psychiatry, Community use Community Psychiatry               | 
              | Psychiatry, Geriatric use Geriatric Psychiatry               | 
              | Psychiatry, Military use Military Psychiatry               | 
              | Psychic Denial of Blindness use Blindness, Cortical               | 
              | Psychical Research use Parapsychology               | 
              | Psychoacoustics               | 
              | Psychoactive Agents use Psychotropic Drugs               | 
              | Psychoanalysis               | 
              | Psychoanalytic Interpretation               | 
              | Psychoanalytic Theory               | 
              | Psychoanalytic Therapy               | 
              | Psychobacter Infections use Moraxellaceae Infections               | 
              | Psychodidae               | 
              | Psychodinae use Psychodidae               | 
              | Psychodrama               | 
              | Psychogenetics use Genetics, Behavioral               | 
              | Psychogenic Headache use Tension-Type Headache               | 
              | Psychogeriatrics use Geriatric Psychiatry               | 
              | Psychoimmunology use Psychoneuroimmunology               | 
              | Psycholinguistics               | 
              | Psychological Extinction use Extinction, Psychological               | 
              | Psychological Feedback use Feedback, Psychological               | 
              | Psychological Phenomena and Processes               | 
              | Psychological Techniques               | 
              | Psychological Tests               | 
              | Psychological Theory               | 
              | Psychological Warfare               | 
              | Psychologists               | 
              | Psychology               | 
              | Psychology, Applied               | 
              | Psychology, Clinical               | 
              | Psychology, Comparative               | 
              | Psychology, Criminal use Criminal Psychology               | 
              | Psychology, Educational               | 
              | Psychology, Experimental               | 
              | Psychology, Health use Behavioral Medicine               | 
              | Psychology, Industrial               | 
              | Psychology, Medical               | 
              | Psychology, Military               | 
              | Psychology, Pastoral use Pastoral Care               | 
              | Psychology, Physiological use Psychophysiology               | 
              | Psychology, Schizophrenic use Schizophrenic Psychology               | 
              | Psychology, Self use Self Psychology               | 
              | Psychology, Social               | 
              | Psychometrics               | 
              | Psychomotor Agitation               | 
              | Psychomotor Disorders               | 
              | Psychomotor Impairment use Psychomotor Disorders               | 
              | Psychomotor Performance               | 
              | Psychoneuroimmunology               | 
              | Psychoneuroses use Neurotic Disorders               | 
              | Psychopathic Personality use Antisocial Personality Disorder               | 
              | Psychopathology               | 
              | Psychopharmaceuticals use Psychotropic Drugs               | 
              | Psychopharmacology               | 
              | Psychophysics               | 
              | Psychophysiologic Disorders               | 
              | Psychophysiology               | 
              | Psychoses use Psychotic Disorders               | 
              | Psychoses, Affective use Affective Disorders, Psychotic               | 
              | Psychoses, Alcoholic               | 
              | Psychoses, Drug use Psychoses, Substance-Induced               | 
              | Psychoses, Paranoid use Paranoid Disorders               | 
              | Psychoses, Substance-Induced               | 
              | Psychoses, Toxic use Psychoses, Substance-Induced               | 
              | Psychoses, Traumatic use Delirium, Dementia, Amnestic, Cognitive Disorders               | 
              | Psychosexual Development               | 
              | Psychosexual Disorders use Sexual Dysfunctions, Psychological               | 
              | Psychosexual Dysfunctions use Sexual Dysfunctions, Psychological               | 
              | Psychosine               | 
              | Psychosis, Brief Reactive use Psychotic Disorders               | 
              | Psychosis, Involutional use Depressive Disorder, Major               | 
              | Psychosis, Manic-Depressive use Bipolar Disorder               | 
              | Psychosocial Care Centers use Mental Health Services               | 
              | Psychosocial Deprivation               | 
              | Psychosocial Impact               | 
              | Psychosocial Support Systems use Social Support               | 
              | Psychosomatic Disorders use Psychophysiologic Disorders               | 
              | Psychosomatic Medicine               | 
              | Psychosurgery               | 
              | Psychotherapeutic Processes               | 
              | Psychotherapy               | 
              | Psychotherapy, Brief               | 
              | Psychotherapy, Cognitive use Cognitive Therapy               | 
              | Psychotherapy, Group               | 
              | Psychotherapy, Multiple               | 
              | Psychotherapy, Rational use Psychotherapy, Rational-Emotive               | 
              | Psychotherapy, Rational-Emotive               | 
              | Psychotic Disorders               | 
              | Psychotomimetic Agents use Hallucinogens               | 
              | Psychotria               | 
              | Psychotria ipecacuanha use Ipecacuanha               | 
              | Psychotropic Drugs               | 
              | Psychrobacter               | 
              | Psyllids use Hemiptera               | 
              | Psyllium               | 
              | Psylloidea use Hemiptera               | 
              | PTC use Factor IX               | 
              | PtdIns use Phosphatidylinositols               | 
              | PtdIns 3-Kinase use Phosphatidylinositol 3-Kinases               | 
              | PtdIns 4-Kinase use 1-Phosphatidylinositol 4-Kinase               | 
              | PtdInsP2 use Phosphatidylinositol 4,5-Diphosphate               | 
              | Ptelea trifoliata               | 
              | PTEN Hamartoma Tumor Syndrome use Hamartoma Syndrome, Multiple               | 
              | PTEN Phosphohydrolase               | 
              | Pteridaceae               | 
              | Pteridines               | 
              | Pteridium               | 
              | Pteridophyta use Ferns               | 
              | Pterins               | 
              | Pteris               | 
              | Pterocarpans               | 
              | Pterocarpus               | 
              | Pterocarpus marsupium use Pterocarpus               | 
              | Pteronura use Otters               | 
              | Pteropodidae use Chiroptera               | 
              | Pteropus use Chiroptera               | 
              | Pteroyl Polyglutamate Hydrolase use gamma-Glutamyl Hydrolase               | 
              | Pteroylglutamic Acid use Folic Acid               | 
              | Pteroylpolyglutamic Acids               | 
              | Pterygium               | 
              | Pterygoid Muscles               | 
              | Pterygopalatine Fossa               | 
              | Ptilocercus use Tupaiidae               | 
              | Ptosis, Eyelid use Blepharoptosis               | 
              | PTSD use Stress Disorders, Post-Traumatic               | 
              | Ptychopetalum use Olacaceae               | 
              | Puberty               | 
              | Puberty, Delayed               | 
              | Puberty, Precocious               | 
              | Pubic Bone               | 
              | Pubic Symphysis               | 
              | Pubic Symphysis Diastasis               | 
              | Public Access to Information use Access to Information               | 
              | Public Administration               | 
              | Public Advocacy use Consumer Advocacy               | 
              | Public Advocacy (Health Law) use Public Defender Legal Services               | 
              | Public Assistance               | 
              | Public Attorneys               | 
              | Public Awareness               | 
              | Public Defender Legal Services               | 
              | Public Domain use Public Sector               | 
              | Public Enterprise use Public Sector               | 
              | Public Facilities               | 
              | Public Gardens use Green Areas               | 
              | Public Health               | 
              | Public Health Administration               | 
              | Public Health Dentistry               | 
              | Public Health Department, Hospital use Health Centers               | 
              | Public Health Informatics               | 
              | Public Health Laboratories use Public Health Laboratory Services               | 
              | Public Health Laboratory Services               | 
              | Public Health Law use Health Law               | 
              | Public Health Nursing               | 
              | Public Health Population Studies use Population Studies in Public Health               | 
              | Public Health Practice               | 
              | Public Health Schools use Schools, Public Health               | 
              | Public Health Service (U.S.) use United States Public Health Service               | 
              | Public Health Services, Laboratory use Public Health Laboratory Services               | 
              | Public Health Students use Students, Public Health               | 
              | Public Health Surveillance use Population Surveillance               | 
              | Public Housing               | 
              | Public Information               | 
              | Public Law 101-508 use Patient Self-Determination Act               | 
              | Public Law 104-191 use Health Insurance Portability and Accountability Act               | 
              | Public Law 93-406 use Employee Retirement Income Security Act               | 
              | Public Law 93-579 use Privacy               | 
              | Public Law 97-248 use Tax Equity and Fiscal Responsibility Act               | 
              | Public Legal Aid use Public Defender Legal Services               | 
              | Public Opinion               | 
              | Public Perception of Science               | 
              | Public Policies               | 
              | Public Policy               | 
              | Public Power               | 
              | Public Prosecutors use Public Attorneys               | 
              | Public Relations               | 
              | Public Sector               | 
              | Public Speaking use Speech               | 
              | Public Standposts               | 
              | Public Water Consumption               | 
              | Public Water Supply use Water Supply               | 
              | Public Works               | 
              | Public-Private Partnership               | 
              | Public-Private Sector Partnerships               | 
              | Publication Bias               | 
              | Publication Components               | 
              | Publication Formats               | 
              | Publications               | 
              | Publications for Science Diffusion               | 
              | Publicity Regulation use Products Publicity Control               | 
              | Published Erratum               | 
              | Publishers' Catalogs use Catalogs, Publishers'               | 
              | Publishing               | 
              | Publishing, Dental Periodicals use Journalism, Dental               | 
              | Publishing, Electronic use Publishing               | 
              | PubMed               | 
              | Puccoon use Lithospermum               | 
              | Puddock-Stool use Hypophyllum sanguineum               | 
              | Pueraria               | 
              | Puericulture use Child Care               | 
              | Puerperal Disorders               | 
              | Puerperal Infection               | 
              | Puerperium use Postpartum Period               | 
              | Puerto Ricans use Hispanic Americans               | 
              | Puerto Rico               | 
              | Puff Adder use Clotho arictans               | 
              | Puff-Ball use Bovista lycoperdon               | 
              | Pufferfish use Tetraodontiformes               | 
              | Puka puka use Brachyglottis repens               | 
              | Puke-Weed use Lobelia inflata               | 
              | Pulai use Alstonia scholaris               | 
              | Pulegium vulgare use Mentha pulegium               | 
              | Pulex irritans               | 
              | Pulicaria               | 
              | Pulmo anaphylacticus               | 
              | Pulmo histaminum use Pulmo anaphylacticus               | 
              | Pulmo vulpis               | 
              | Pulmonaria               | 
              | Pulmonaria officinalis use Pulmonaria vulgaris               | 
              | Pulmonaria vulgaris               | 
              | Pulmonary Adenomatosis use Adenomatosis, Pulmonary               | 
              | Pulmonary Adenomatosis, Bovine use Pneumonia, Atypical Interstitial, of Cattle               | 
              | Pulmonary Adenomatosis, Ovine               | 
              | Pulmonary Alveolar Proteinosis               | 
              | Pulmonary Alveoli               | 
              | Pulmonary Artery               | 
              | Pulmonary Artery Wedge Pressure use Pulmonary Wedge Pressure               | 
              | Pulmonary Aspergillosis               | 
              | Pulmonary Atelectasis               | 
              | Pulmonary Atresia               | 
              | Pulmonary Blastoma               | 
              | Pulmonary Cancer use Lung Neoplasms               | 
              | Pulmonary Capillary Wedge Pressure use Pulmonary Wedge Pressure               | 
              | Pulmonary Circulation               | 
              | Pulmonary Coin Lesion use Solitary Pulmonary Nodule               | 
              | Pulmonary Consumption use Tuberculosis, Pulmonary               | 
              | Pulmonary Diffusing Capacity               | 
              | Pulmonary Disease, Chronic Obstructive               | 
              | Pulmonary Diseases use Lung Diseases               | 
              | Pulmonary Edema               | 
              | Pulmonary Embolism               | 
              | Pulmonary Emphysema               | 
              | Pulmonary Eosinophilia               | 
              | Pulmonary Fibrosis               | 
              | Pulmonary Fibrosis - from Asbestos Exposure use Asbestosis               | 
              | Pulmonary Function Tests use Respiratory Function Tests               | 
              | Pulmonary Fungal Infections use Lung Diseases, Fungal               | 
              | Pulmonary Gas Exchange               | 
              | Pulmonary Heart Disease               | 
              | Pulmonary Hypertension use Hypertension, Pulmonary               | 
              | Pulmonary Infarction               | 
              | Pulmonary Inflammation use Pneumonia               | 
              | Pulmonary Infundibular Stenosis use Pulmonary Subvalvular Stenosis               | 
              | Pulmonary Macrophages use Macrophages, Alveolar               | 
              | Pulmonary Medicine               | 
              | Pulmonary Neoplasms use Lung Neoplasms               | 
              | Pulmonary Nodule, Solitary use Solitary Pulmonary Nodule               | 
              | Pulmonary Phthisis use Tuberculosis, Pulmonary               | 
              | Pulmonary Regurgitation use Pulmonary Valve Insufficiency               | 
              | Pulmonary Sarcoidosis use Sarcoidosis, Pulmonary               | 
              | Pulmonary Sclerosing Hemangioma               | 
              | Pulmonary Sequestration use Bronchopulmonary Sequestration               | 
              | Pulmonary Stenosis use Pulmonary Valve Stenosis               | 
              | Pulmonary Stretch Receptors               | 
              | Pulmonary Subvalvular Stenosis               | 
              | Pulmonary Surfactant-Associated Protein A               | 
              | Pulmonary Surfactant-Associated Protein B               | 
              | Pulmonary Surfactant-Associated Protein C               | 
              | Pulmonary Surfactant-Associated Protein D               | 
              | Pulmonary Surfactant-Associated Protein SP-B use Pulmonary Surfactant-Associated Protein B               | 
              | Pulmonary Surfactant-Associated Protein SP-C use Pulmonary Surfactant-Associated Protein C               | 
              | Pulmonary Surfactant-Associated Proteins               | 
              | Pulmonary Surfactants               | 
              | Pulmonary Surgical Procedures               | 
              | Pulmonary Thromboembolism use Pulmonary Embolism               | 
              | Pulmonary Valve               | 
              | Pulmonary Valve Atresia use Pulmonary Atresia               | 
              | Pulmonary Valve Incompetence use Pulmonary Valve Insufficiency               | 
              | Pulmonary Valve Insufficiency               | 
              | Pulmonary Valve Stenosis               | 
              | Pulmonary Veins               | 
              | Pulmonary Veno-Occlusive Disease               | 
              | Pulmonary Venous Wedge Pressure use Pulmonary Wedge Pressure               | 
              | Pulmonary Ventilation               | 
              | Pulmonary Wedge Pressure               | 
              | Pulmonic Plague use Plague               | 
              | Pulmonology use Pulmonary Medicine               | 
              | Pulp and Paper Industry               | 
              | Pulp Canal use Dental Pulp Cavity               | 
              | Pulp Capping use Dental Pulp Capping               | 
              | Pulp Capping and Pulpectomy Agents               | 
              | Pulp Chamber use Dental Pulp Cavity               | 
              | Pulp Gangrene use Dental Pulp Necrosis               | 
              | Pulp Mummification use Dental Pulp Necrosis               | 
              | Pulp Necrosis use Dental Pulp Necrosis               | 
              | Pulpa Dentis use Dental Pulp               | 
              | Pulpectomy               | 
              | Pulpitis               | 
              | Pulpotomy               | 
              | Pulsatile Flow               | 
              | Pulsatile Tinnitus use Tinnitus               | 
              | Pulsatilla               | 
              | Pulsatilla nigricans               | 
              | Pulsatilla nuttalliana               | 
              | Pulsatilla pratensis use Pulsatilla nigricans               | 
              | Pulse               | 
              | Pulse Oximetry use Oximetry               | 
              | Pulse Radiolysis               | 
              | Pulse Rate use Heart Rate               | 
              | Pulse Therapy, Drug               | 
              | Pulsed Dye Lasers use Lasers, Dye               | 
              | Pulseless Disease use Takayasu Arteritis               | 
              | Pulverization use Grinding               | 
              | Pulvinar               | 
              | Pulvinus               | 
              | Puma               | 
              | Puma concolor use Puma               | 
              | Puma lentivirus use Immunodeficiency Virus, Feline               | 
              | Pummelo use Citrus decumana               | 
              | Pummelo Tree use Citrus               | 
              | Pumping Stations               | 
              | Pumping, Intra-Aortic Balloon use Intra-Aortic Balloon Pumping               | 
              | Pumpkins use Cucurbita               | 
              | Pumps               | 
              | Pumps, Heart-Assist use Heart-Assist Devices               | 
              | Pumps, Infusion use Infusion Pumps               | 
              | Punched-Card Systems               | 
              | Punctual Source use Point Source               | 
              | Puncture Biopsy use Biopsy, Needle               | 
              | Puncture Vine use Tribulus               | 
              | Punctures               | 
              | Punica granatum use Granatum               | 
              | Punicaceae               | 
              | Punishment               | 
              | Punna use Calophyllum               | 
              | Pupa               | 
              | Pupfishes use Killifishes               | 
              | Pupil               | 
              | Pupil Disorders               | 
              | Pupil Nurses use Students, Nursing               | 
              | Pupil Reaction Absent use Pupil Disorders               | 
              | Pupil, Tonic use Tonic Pupil               | 
              | Pupillary Functions, Abnormal use Pupil Disorders               | 
              | Pupillary Miosis use Miosis               | 
              | Puppet Children use Angelman Syndrome               | 
              | Puppets use Play and Playthings               | 
              | Purchase, Dental Practice use Practice Valuation and Purchase               | 
              | Purchase, Medical Practice use Practice Valuation and Purchase               | 
              | Purchasing, Hospital               | 
              | Pure Agraphia use Agraphia               | 
              | Pure Alexia use Alexia, Pure               | 
              | Pure Autonomic Failure               | 
              | Pure Oxygen Activated Sludges               | 
              | Pure Red-Cell Aplasia use Red-Cell Aplasia, Pure               | 
              | Pure Water               | 
              | Purgatives use Cathartics               | 
              | Purgin Croton use Croton tiglium               | 
              | Purification Potentiality use Analysis of Treatability               | 
              | Purified Water with Added Salts               | 
              | Purified Water with Salt Addition use Purified Water with Added Salts               | 
              | Purine Nucleosides               | 
              | Purine Nucleotides               | 
              | Purine Receptors use Receptors, Purinergic               | 
              | Purine-Nucleoside Phosphorylase               | 
              | Purine-Pyrimidine Metabolism, Inborn Errors               | 
              | Purinergic Agents               | 
              | Purinergic Agonists               | 
              | Purinergic Antagonists               | 
              | Purinergic P1 Receptor Agonists               | 
              | Purinergic P1 Receptor Antagonists               | 
              | Purinergic P1 Receptors use Receptors, Purinergic P1               | 
              | Purinergic P2 Receptor Agonists               | 
              | Purinergic P2 Receptor Antagonists               | 
              | Purinergic P2 Receptors use Receptors, Purinergic P2               | 
              | Purinergic P2X Receptor Agonists               | 
              | Purinergic P2X Receptor Antagonists               | 
              | Purinergic P2Y Receptor Agonists               | 
              | Purinergic P2Y Receptor Antagonists               | 
              | Purinergic Receptors use Receptors, Purinergic               | 
              | Purines               | 
              | Purinoceptors use Receptors, Purinergic               | 
              | Purinones               | 
              | Purkinje Cells               | 
              | Purkinje Fibers               | 
              | Purkinje-Type Calcium Channels use Calcium Channels, P-Type               | 
              | Puromycin               | 
              | Puromycin Aminonucleoside               | 
              | Purple Avens use Geum rivale               | 
              | Purple Bacteria use Proteobacteria               | 
              | Purple Cockle use Agrostemma githago               | 
              | Purple Coneflower use Echinacea purpurea               | 
              | Purple Foxglove use Digitalis purpurea               | 
              | Purple Lily use Iris germanica               | 
              | Purple Membrane               | 
              | Purple Nonsulfur Bacteria use Rhodospirillaceae               | 
              | Purple Osier use Salix purpurea               | 
              | Purple Pitcher Plant use Sarracenia purpurea               | 
              | Purple Sulfur Bacteria use Chromatiaceae               | 
              | Purple Thorn-Apple use Datura metel               | 
              | Purple Willow use Salix purpurea               | 
              | Purpura               | 
              | Purpura Fulminans               | 
              | Purpura Fulminans (Waterhouse-Friderichsen Syndrome) use Waterhouse-Friderichsen Syndrome               | 
              | Purpura Hemorrhagica use Purpura, Schoenlein-Henoch               | 
              | Purpura, Hyperglobulinemic               | 
              | Purpura, Nonthrombocytopenic use Purpura, Schoenlein-Henoch               | 
              | Purpura, Schoenlein-Henoch               | 
              | Purpura, Thrombocytopenic               | 
              | Purpura, Thrombocytopenic, Autoimmune use Purpura, Thrombocytopenic, Idiopathic               | 
              | Purpura, Thrombocytopenic, Idiopathic               | 
              | Purpura, Thrombopenic use Purpura, Thrombocytopenic               | 
              | Purpura, Thrombotic Thrombocytopenic               | 
              | Purpura, Thrombotic Thrombopenic use Purpura, Thrombotic Thrombocytopenic               | 
              | Purslane use Portulaca               | 
              | Pursuit, Saccadic use Saccades               | 
              | Pursuit, Smooth               | 
              | Pus use Suppuration               | 
              | Pushkarmoola use Inula               | 
              | Pushkarmula use Inula               | 
              | Pustulants use Irritants               | 
              | Pustular Dermatosis, Subcorneal use Skin Diseases, Vesiculobullous               | 
              | Pustular Psoriasis of Palms and Soles use Psoriasis               | 
              | Pustulosis of Palms and Soles use Psoriasis               | 
              | Pustulosis Palmaris et Plantaris use Psoriasis               | 
              | Putamen               | 
              | Putaminal Hemorrhage               | 
              | Putrefaction use Biodegradation, Environmental               | 
              | Putrescine               | 
              | Puumala virus               | 
              | PUVA Therapy               | 
              | PVC Pipes               | 
              | PVP-Iodine use Povidone-Iodine               | 
              | pX Genes use Genes, pX               | 
              | Pyaemia use Sepsis               | 
              | Pycnodysostosis               | 
              | Pycnoporus               | 
              | Pyelectasis               | 
              | Pyelitis               | 
              | Pyelocystitis               | 
              | Pyelography use Urography               | 
              | Pyelonephritis               | 
              | Pyelonephritis, Acute Necrotizing use Pyelonephritis               | 
              | Pyelonephritis, Xanthogranulomatous               | 
              | Pyemia use Sepsis               | 
              | Pygathrix use Cercopithecidae               | 
              | Pygeum               | 
              | Pygmy Chimpanzee use Pan paniscus               | 
              | Pygmy Killer Whale use Dolphins               | 
              | Pygmy Right Whale use Whales               | 
              | Pygmy Sperm Whale use Whales               | 
              | Pyknodysostosis use Pycnodysostosis               | 
              | Pyknolepsy use Epilepsy, Absence               | 
              | PYLL use Potential Years of Life Lost               | 
              | Pyloric Antrum               | 
              | Pyloric Glands use Gastric Mucosa               | 
              | Pyloric Stenosis               | 
              | Pyloric Stenosis, Hypertrophic               | 
              | Pylorus               | 
              | Pyocins               | 
              | Pyocyanine               | 
              | Pyoderma               | 
              | Pyoderma Gangrenosum               | 
              | Pyohemia use Sepsis               | 
              | Pyometra               | 
              | Pyomyositis               | 
              | Pyonephrosis               | 
              | Pyorrhea Alveolaris use Periodontal Diseases               | 
              | Pyothorax use Empyema, Pleural               | 
              | Pyracantha               | 
              | Pyramidal Cells               | 
              | Pyramidal Tracts               | 
              | Pyran Copolymer               | 
              | Pyranisamine use Pyrilamine               | 
              | Pyranocoumarins               | 
              | Pyrans               | 
              | Pyrantel               | 
              | Pyrantel Embonate use Pyrantel Pamoate               | 
              | Pyrantel Pamoate               | 
              | Pyrantel Tartrate               | 
              | Pyrara use Pyrarara               | 
              | Pyrarara               | 
              | Pyrazinamide               | 
              | Pyrazines               | 
              | Pyrazinopyrimidines use Pteridines               | 
              | Pyrazoles               | 
              | Pyrazolones               | 
              | Pyrenes               | 
              | Pyrethrins               | 
              | Pyrethrum use Chrysanthemum cinerariifolium               | 
              | Pyrethrum officinarum               | 
              | Pyrethrum parthenium               | 
              | Pyrethrum roseum               | 
              | Pyrethum Daisy use Chrysanthemum cinerariifolium               | 
              | Pyrexia use Fever               | 
              | Pyrexial Seizure use Seizures, Febrile               | 
              | Pyricarbate use Pyridinolcarbamate               | 
              | Pyricularia grisea               | 
              | Pyridazines               | 
              | Pyridine Aldoxime Methyl Compounds use Pralidoxime Compounds               | 
              | Pyridine Nucleotide Transhydrogenase use NADP Transhydrogenase               | 
              | Pyridines               | 
              | Pyridinium Compounds               | 
              | Pyridinolcarbamate               | 
              | Pyridinones use Pyridones               | 
              | Pyridones               | 
              | Pyridostigmine Bromide               | 
              | Pyridoxal               | 
              | Pyridoxal Kinase               | 
              | Pyridoxal Phosphate               | 
              | Pyridoxamine               | 
              | Pyridoxamine Kinase use Pyridoxal Kinase               | 
              | Pyridoxaminephosphate Oxidase               | 
              | Pyridoxic Acid               | 
              | Pyridoxine               | 
              | Pyridoxine Deficiency use Vitamin B 6 Deficiency               | 
              | Pyridoxine Kinase use Pyridoxal Kinase               | 
              | Pyridoxinecarboxylic Acid use Pyridoxic Acid               | 
              | Pyridoxinedisulfide use Pyrithioxin               | 
              | Pyridoxinephosphate Oxidase use Pyridoxaminephosphate Oxidase               | 
              | Pyridylcarbinol use Nicotinyl Alcohol               | 
              | Pyriform Sinus               | 
              | Pyrilamine               | 
              | Pyrimethamine               | 
              | Pyrimidine 5'-Nucleotidase use 5'-Nucleotidase               | 
              | Pyrimidine Dimers               | 
              | Pyrimidine Nucleosides               | 
              | Pyrimidine Nucleotides               | 
              | Pyrimidine Phosphorylases               | 
              | Pyrimidines               | 
              | Pyrimidinones               | 
              | Pyrimidones use Pyrimidinones               | 
              | Pyrithiamine               | 
              | Pyrithioxin               | 
              | Pyritinol use Pyrithioxin               | 
              | Pyrobaculum               | 
              | Pyrocarbonic Acid Diethyl Ester use Diethyl Pyrocarbonate               | 
              | Pyrocatechols use Catechols               | 
              | Pyroclastic Flow               | 
              | Pyroclastic Material               | 
              | Pyrococcus               | 
              | Pyrococcus abyssi               | 
              | Pyrococcus furiosus               | 
              | Pyrococcus horikoshii               | 
              | Pyrodictiaceae               | 
              | Pyrodictium use Pyrodictiaceae               | 
              | Pyrogallol               | 
              | Pyrogenium               | 
              | Pyrogens               | 
              | Pyroglobulins               | 
              | Pyroglutamate Aminopeptidase use Pyroglutamyl-Peptidase I               | 
              | Pyroglutamate Hydrolase               | 
              | Pyroglutamic Acid use Pyrrolidonecarboxylic Acid               | 
              | Pyroglutamyl-Peptidase I               | 
              | Pyroglyphidae               | 
              | Pyrola               | 
              | Pyrola maculata use Chimaphila maculata               | 
              | Pyrola rotundifolia               | 
              | Pyrola umbellata use Chimaphila umbellata               | 
              | Pyrolaceae               | 
              | Pyrolignosum Acidum               | 
              | Pyrolobus use Pyrodictiaceae               | 
              | Pyrolysis               | 
              | Pyromania use Firesetting Behavior               | 
              | Pyrones               | 
              | Pyronine               | 
              | Pyrophoric Materials               | 
              | Pyrophosphatase, Inorganic use Inorganic Pyrophosphatase               | 
              | Pyrophosphatases               | 
              | Pyrophosphates use Diphosphates               | 
              | Pyrophosphokinases use Diphosphotransferases               | 
              | Pyrophosphoric Acids use Phosphoric Acids               | 
              | Pyrophosphotransferases use Diphosphotransferases               | 
              | Pyrosis use Heartburn               | 
              | Pyrrolamidol use Dextromoramide               | 
              | Pyrroles               | 
              | Pyrrolidines               | 
              | Pyrrolidinomethyltetracycline use Rolitetracycline               | 
              | Pyrrolidinones               | 
              | Pyrrolidonecarboxylate Peptidase use Pyroglutamyl-Peptidase I               | 
              | Pyrrolidonecarboxylic Acid               | 
              | Pyrrolidones use Pyrrolidinones               | 
              | Pyrrolidonyl Peptidase use Pyroglutamyl-Peptidase I               | 
              | Pyrroline Carboxylate Reductases               | 
              | Pyrrolizidine Alkaloids               | 
              | Pyrrolnitrin               | 
              | Pyrroloiminoquinones               | 
              | Pyrrovinyquinium use Pyrvinium Compounds               | 
              | Pyrularia               | 
              | Pyrus               | 
              | Pyrus americanus               | 
              | Pyrus cydonia use Cydonia vulgaris               | 
              | Pyrus germanica use Mespillus germanica               | 
              | Pyruvaldehyde               | 
              | Pyruvate use Pyruvic Acid               | 
              | Pyruvate Carboxylase               | 
              | Pyruvate Carboxylase Deficiency Disease               | 
              | Pyruvate Decarboxylase               | 
              | Pyruvate Dehydrogenase (Lipoamide)               | 
              | Pyruvate Dehydrogenase (Lipoamide)-Phosphatase               | 
              | Pyruvate Dehydrogenase Complex               | 
              | Pyruvate Dehydrogenase Complex Deficiency Disease               | 
              | Pyruvate Dehydrogenase Phosphatase use Pyruvate Dehydrogenase (Lipoamide)-Phosphatase               | 
              | Pyruvate Kinase               | 
              | Pyruvate Metabolism, Inborn Errors               | 
              | Pyruvate Oxidase               | 
              | Pyruvate Synthase               | 
              | Pyruvate, Orthophosphate Dikinase               | 
              | Pyruvate, Phosphate Dikinase use Pyruvate, Orthophosphate Dikinase               | 
              | Pyruvates               | 
              | Pyruvic Acid               | 
              | Pyruvic Decarboxylase use Pyruvate Decarboxylase               | 
              | Pyrvinium Compounds               | 
              | Pythiosis               | 
              | Pythium               | 
              | Python use Boidae               | 
              | Pyuria               | 
              | PYY Peptide use Peptide YY               |