| I Blood-Group System               | 
              | I-Cell Disease use Mucolipidoses               | 
              | I-kappa B Kinase               | 
              | I-kappa B Proteins               | 
              | I-Research use International Research Information System               | 
              | Ia Antigens use Histocompatibility Antigens Class II               | 
              | IA-like Antigens use Histocompatibility Antigens Class II               | 
              | IA-like Antigens, Human use HLA-D Antigens               | 
              | IACR use Internal Advisory Committee on Research               | 
              | IADB use Inter-American Development Bank               | 
              | IAIMS use Integrated Advanced Information Management Systems               | 
              | IAP Elements use Genes, Intracisternal A-Particle               | 
              | IAP Pertussis Toxin use Pertussis Toxin               | 
              | Iatrogenic Disease               | 
              | IBDV use Infectious bursal disease virus               | 
              | Iberis amara               | 
              | Ibero-American Scientific and Technological Program for Development               | 
              | Iboga use Tabernaemontana               | 
              | Ibogaine               | 
              | Ibotenic Acid               | 
              | IBR-IPV Virus use Herpesvirus 1, Bovine               | 
              | IBRD use International Bank for Reconstruction and Development               | 
              | Ibuprofen               | 
              | IC50 use Inhibitory Concentration 50               | 
              | ICAM-1 use Intercellular Adhesion Molecule-1               | 
              | ICD Codes use International Classification of Diseases               | 
              | ICD-10 use International Classification of Diseases               | 
              | ICD-9 use International Classification of Diseases               | 
              | Ice               | 
              | Ice Barrier               | 
              | Ice Break Up               | 
              | Ice Break-Up use Ice Break Up               | 
              | Ice Cover               | 
              | Ice Cream               | 
              | Ice Dam use Ice Jam               | 
              | Ice Foods use Ice-cold Foods               | 
              | Ice Gorge use Ice Jam               | 
              | Ice Hockey use Hockey               | 
              | Ice Jam               | 
              | Ice Lolly use Ice-cold Foods               | 
              | Ice Pack use Ice Barrier               | 
              | Ice Plant use Mesembryanthemum               | 
              | ICE Protease use Caspase 1               | 
              | Ice Skating use Skating               | 
              | Ice Storm               | 
              | Ice-cold Foods               | 
              | Iceland               | 
              | Iceplant use Mesembryanthemum               | 
              | ICF use International Classification of Functioning, Disability and Health               | 
              | Ichthyolum               | 
              | Ichthyosiform Erythroderma, Bullous Congenital use Hyperkeratosis, Epidermolytic               | 
              | Ichthyosiform Erythroderma, Congenital               | 
              | Ichthyosiform Erythroderma, Nonbullous Congenital use Ichthyosis, Lamellar               | 
              | Ichthyosis               | 
              | Ichthyosis Bullosa of Siemens               | 
              | Ichthyosis Vulgaris               | 
              | Ichthyosis, Lamellar               | 
              | Ichthyosis, Sex-Linked use Ichthyosis, X-Linked               | 
              | Ichthyosis, X-Linked               | 
              | Ichthyosporea use Mesomycetozoea               | 
              | Ichthyotoxinum use Serum anguillae               | 
              | Icosahedral Cytoplasmic Deoxyriboviruses use Iridoviridae               | 
              | Icosanoids use Eicosanoids               | 
              | ICSH (Interstitial Cell Stimulating Hormone) use Luteinizing Hormone               | 
              | ICSH Receptors use Receptors, LH               | 
              | ICSH, beta Subunit use Luteinizing Hormone, beta Subunit               | 
              | ICSI use Sperm Injections, Intracytoplasmic               | 
              | Ictalurid herpesvirus 1 use Ictalurivirus               | 
              | Ictaluridae               | 
              | Ictalurivirus               | 
              | Ictalurus use Ictaluridae               | 
              | Icterus use Jaundice               | 
              | Ictodes foetida               | 
              | ICYP use Iodocyanopindolol               | 
              | Id               | 
              | Idaho               | 
              | Idarubicin               | 
              | Idazoxan               | 
              | IDB use Inter-American Development Bank               | 
              | IDDM use Diabetes Mellitus, Type 1               | 
              | Ideational Apraxia use Apraxias               | 
              | Identification (Psychology)               | 
              | Identification Code for Hazardous Materials               | 
              | Identification, Social use Social Identification               | 
              | Identity and Quality Pattern for Products and Services               | 
              | Identity Crisis               | 
              | Ideomotor Apraxia use Apraxia, Ideomotor               | 
              | Idiocy use Mental Retardation               | 
              | Idiomarina use Alteromonadaceae               | 
              | Idiopathic CD4-Positive T-Lymphocytopenia use T-Lymphocytopenia, Idiopathic CD4-Positive               | 
              | Idiopathic CNS Hypersomnolence use Hypersomnolence, Idiopathic               | 
              | Idiopathic Environmental Intolerances use Multiple Chemical Sensitivity               | 
              | Idiopathic Hypercatabolic Hypoproteinemia use Protein-Losing Enteropathies               | 
              | Idiopathic Hypereosinophilic Syndrome use Hypereosinophilic Syndrome               | 
              | Idiopathic Hypertrophic Subaortic Stenosis use Cardiomyopathy, Hypertrophic               | 
              | Idiopathic Hypertrophic Subvalvular Stenosis use Cardiomyopathy, Hypertrophic               | 
              | Idiopathic Interstitial Pneumonias               | 
              | Idiopathic Intracranial Hypertension use Pseudotumor Cerebri               | 
              | Idiopathic Myoclonic Epilepsy use Epilepsies, Myoclonic               | 
              | Idiopathic Orofacial Dyskinesia use Meige Syndrome               | 
              | Idiopathic Orthostatic Hypotension, Shy-Drager Type use Shy-Drager Syndrome               | 
              | Idiopathic Parkinson Disease use Parkinson Disease               | 
              | Idiopathic Pulmonary Fibrosis               | 
              | Idiopathic Thrombocytopenic Purpura use Purpura, Thrombocytopenic, Idiopathic               | 
              | Idiopathic Torsion Dystonia use Dystonia Musculorum Deformans               | 
              | Idiosyncrasy               | 
              | Idiotypes, Immunoglobulin use Immunoglobulin Idiotypes               | 
              | Iditol Dehydrogenase use L-Iditol 2-Dehydrogenase               | 
              | Idnoreovirus use Reoviridae               | 
              | Idoxuridine               | 
              | IDP use Inosine Diphosphate               | 
              | IDRC use International Development Research Centre               | 
              | Iduronate Sulfatase               | 
              | Iduronatesulfate Sulfohydrolase use Iduronate Sulfatase               | 
              | Iduronic Acid               | 
              | Iduronidase               | 
              | IFN-gamma-Inducing Factor use Interleukin-18               | 
              | IFN-Stimulated Gene Factor 3 Complex use Interferon-Stimulated Gene Factor 3               | 
              | Ifosfamide               | 
              | Ig Somatic Hypermutation use Somatic Hypermutation, Immunoglobulin               | 
              | IgA use Immunoglobulin A               | 
              | IgA Deficiency               | 
              | IgA, Exocrine use Immunoglobulin A, Secretory               | 
              | IgA, Secretory use Immunoglobulin A, Secretory               | 
              | IgD use Immunoglobulin D               | 
              | IgE use Immunoglobulin E               | 
              | IgE Receptors use Receptors, IgE               | 
              | IgE-Mediated Hypersensitivity use Hypersensitivity, Immediate               | 
              | IGF Type 1 Receptor use Receptor, IGF Type 1               | 
              | IGF Type 2 Receptor use Receptor, IGF Type 2               | 
              | IGF-Binding Protein 1 use Insulin-Like Growth Factor Binding Protein 1               | 
              | IGF-Binding Protein 2 use Insulin-Like Growth Factor Binding Protein 2               | 
              | IGF-Binding Protein 3 use Insulin-Like Growth Factor Binding Protein 3               | 
              | IGF-Binding Protein 4 use Insulin-Like Growth Factor Binding Protein 4               | 
              | IGF-Binding Protein 5 use Insulin-Like Growth Factor Binding Protein 5               | 
              | IGF-Binding Protein 6 use Insulin-Like Growth Factor Binding Protein 6               | 
              | IGF-Binding Proteins use Insulin-Like Growth Factor Binding Proteins               | 
              | IGF-I use Insulin-Like Growth Factor I               | 
              | IGF-I Receptor use Receptor, IGF Type 1               | 
              | IGF-II use Insulin-Like Growth Factor II               | 
              | IGF-II Receptor use Receptor, IGF Type 2               | 
              | IGFBP use Insulin-Like Growth Factor Binding Proteins               | 
              | IGFBP-1 use Insulin-Like Growth Factor Binding Protein 1               | 
              | IGFBP-2 use Insulin-Like Growth Factor Binding Protein 2               | 
              | IGFBP-3 use Insulin-Like Growth Factor Binding Protein 3               | 
              | IGFBP-4 use Insulin-Like Growth Factor Binding Protein 4               | 
              | IGFBP-5 use Insulin-Like Growth Factor Binding Protein 5               | 
              | IGFBP-6 use Insulin-Like Growth Factor Binding Protein 6               | 
              | IgG use Immunoglobulin G               | 
              | IgG Deficiency               | 
              | IgG Receptors use Receptors, IgG               | 
              | IgM use Immunoglobulin M               | 
              | Ignatia amara               | 
              | Ignicoccus use Desulfurococcaceae               | 
              | Iguanas               | 
              | IHHNV use Densovirinae               | 
              | IHNV use Infectious hematopoietic necrosis virus               | 
              | Ikaros Transcription Factor               | 
              | IKe Phage use Bacteriophage IKe               | 
              | Ikshugandha use Tribulus terrestris               | 
              | IL-1 use Interleukin-1               | 
              | IL-1 alpha use Interleukin-1alpha               | 
              | IL-1 beta use Interleukin-1beta               | 
              | IL-1 beta-Converting Enzyme use Caspase 1               | 
              | IL-1 Receptors use Receptors, Interleukin-1               | 
              | IL-10 use Interleukin-10               | 
              | IL-11 use Interleukin-11               | 
              | IL-11 Receptors use Receptors, Interleukin-11               | 
              | IL-12 use Interleukin-12               | 
              | IL-12 Receptors use Receptors, Interleukin-12               | 
              | IL-13 use Interleukin-13               | 
              | IL-13 Receptors use Receptors, Interleukin-13               | 
              | IL-15 use Interleukin-15               | 
              | IL-15 Receptor use Receptors, Interleukin-15               | 
              | IL-16 use Interleukin-16               | 
              | Il-16 Receptors use Receptors, Interleukin-16               | 
              | IL-17 use Interleukin-17               | 
              | IL-17 Receptors use Receptors, Interleukin-17               | 
              | IL-18 use Interleukin-18               | 
              | IL-18 Receptors use Receptors, Interleukin-18               | 
              | IL-2 use Interleukin-2               | 
              | IL-2 Receptors use Receptors, Interleukin-2               | 
              | IL-21 Receptors use Receptors, Interleukin-21               | 
              | IL-23 use Interleukin-23               | 
              | IL-3 use Interleukin-3               | 
              | IL-3 Receptor beta Subunit use Cytokine Receptor Common beta Subunit               | 
              | IL-3 Receptors use Receptors, Interleukin-3               | 
              | IL-4 use Interleukin-4               | 
              | IL-4 Receptors use Receptors, Interleukin-4               | 
              | IL-4 Receptors, Type I use Receptors, Interleukin-4, Type I               | 
              | IL-4 Receptors, Type II use Receptors, Interleukin-4, Type II               | 
              | IL-5 use Interleukin-5               | 
              | IL-5 Receptor beta Subunit use Cytokine Receptor Common beta Subunit               | 
              | IL-5 Receptors use Receptors, Interleukin-5               | 
              | IL-6 use Interleukin-6               | 
              | IL-6 Receptors use Receptors, Interleukin-6               | 
              | IL-7 use Interleukin-7               | 
              | IL-7 Receptors use Receptors, Interleukin-7               | 
              | IL-8 use Interleukin-8               | 
              | IL-8 Receptors use Receptors, Interleukin-8               | 
              | IL-8A Receptors use Receptors, Interleukin-8A               | 
              | IL-9 use Interleukin-9               | 
              | IL-9 Receptors use Receptors, Interleukin-9               | 
              | Ilarvirus               | 
              | Ileal Conduit use Urinary Diversion               | 
              | Ileal Diseases               | 
              | Ileal Neoplasms               | 
              | Ileal Pouches use Colonic Pouches               | 
              | Ileal Reservoirs use Colonic Pouches               | 
              | Ileitis               | 
              | Ileitis, Regional use Crohn Disease               | 
              | Ileitis, Terminal use Crohn Disease               | 
              | Ileoanal Pouches use Colonic Pouches               | 
              | Ileoanal Reservoirs use Colonic Pouches               | 
              | Ileocecal Valve               | 
              | Ileocolitis use Crohn Disease               | 
              | Ileojejunal Bypass use Jejunoileal Bypass               | 
              | Ileostomy               | 
              | Iles Comores use Comoros               | 
              | Ileum               | 
              | Ileus               | 
              | Ilex               | 
              | Ilex aquifolium               | 
              | Ilex casseine               | 
              | Ilex guayusa               | 
              | Ilex paraguariensis               | 
              | Ilex verticillata use Prinos verticillatus               | 
              | Ilex vomitoria               | 
              | Iliac Aneurysm               | 
              | Iliac Artery               | 
              | Iliac Vein               | 
              | Iliopsoas Abscess use Psoas Abscess               | 
              | Ilium               | 
              | Ilizarov Technique               | 
              | Ill use Patients               | 
              | Ill, Incurable use Incurable Patients               | 
              | Illecebrum verticillatum               | 
              | Illegal Immigration               | 
              | Illegitimacy               | 
              | Illex use Decapodiformes               | 
              | Illicit Connections use Illicit Installations               | 
              | Illicit Drug Testing use Substance Abuse Detection               | 
              | Illicit Drugs use Street Drugs               | 
              | Illicit Installations               | 
              | Illicium               | 
              | Illicium verum use Anisum stellatum               | 
              | Illicum               | 
              | Illinois               | 
              | Illiteracy use Educational Status               | 
              | Illness use Disease               | 
              | Illness Behavior               | 
              | Illness Days use Sick Leave               | 
              | Illuminating Gas Poisoning use Carbon Monoxide Poisoning               | 
              | Illumination use Lighting               | 
              | Illusions               | 
              | Illustrated Books use Books, Illustrated               | 
              | Illustration, Medical use Medical Illustration               | 
              | Iloprost               | 
              | Iltovirus               | 
              | Image Analysis, Computer-Assisted use Image Processing, Computer-Assisted               | 
              | Image Cytometry               | 
              | Image Enhancement               | 
              | Image Interpretation, Computer-Assisted               | 
              | Image Processing, Computer-Assisted               | 
              | Image Reconstruction use Image Processing, Computer-Assisted               | 
              | Image-Guided Surgery use Surgery, Computer-Assisted               | 
              | Imagery (Psychotherapy)               | 
              | Imagery, Guided use Imagery (Psychotherapy)               | 
              | Imagination               | 
              | Imaging, Diagnostic use Diagnostic Imaging               | 
              | Imaging, Medical use Diagnostic Imaging               | 
              | Imaging, Three-Dimensional               | 
              | Imaging, Three-Dimensional, Computer Assisted use Imaging, Three-Dimensional               | 
              | Imbibition Methods               | 
              | IMCI use Integrated Management of Childhood Illness               | 
              | Imecromone use Hymecromone               | 
              | Imhoff Tanks               | 
              | Imidamine use Antazoline               | 
              | Imidates use Imidoesters               | 
              | Imidazoles               | 
              | Imidazolidines               | 
              | Imidazolidinethione use Ethylenethiourea               | 
              | Imidazoline Receptors               | 
              | Imidazoline-Guanidinium Receptors use Imidazoline Receptors               | 
              | Imidazolines               | 
              | Imides               | 
              | Imidobenzyle use Imipramine               | 
              | Imidocarb               | 
              | Imidoesters               | 
              | Imines               | 
              | Imino Acids               | 
              | Imino Furanoses               | 
              | Imino Pyranoses               | 
              | Imino Sugars               | 
              | Imipemide use Imipenem               | 
              | Imipenem               | 
              | Imipramine               | 
              | Imitative Behavior               | 
              | Imizin use Imipramine               | 
              | Immature B-Lymphocytes use Precursor Cells, B-Lymphoid               | 
              | Immediate Recall use Memory, Short-Term               | 
              | Immediate-Early Genes use Genes, Immediate-Early               | 
              | Immediate-Early Proteins               | 
              | Immersion               | 
              | Immersion Foot               | 
              | Immigrants use Emigrants and Immigrants               | 
              | Immigration use Emigration and Immigration               | 
              | Immobility Response, Tonic               | 
              | Immobilization               | 
              | Immobilization Reaction, Cataleptic use Freezing Reaction, Cataleptic               | 
              | Immobilization, Tonic use Immobility Response, Tonic               | 
              | Immobilized Antibodies use Antibodies, Immobilized               | 
              | Immobilized Cells use Cells, Immobilized               | 
              | Immobilized Enzymes use Enzymes, Immobilized               | 
              | Immobilized Proteins               | 
              | Immotile Cilia Syndrome use Ciliary Motility Disorders               | 
              | Immune Adherence Reaction               | 
              | Immune Complex use Antigen-Antibody Complex               | 
              | Immune Complex Diseases               | 
              | Immune Disorders use Immune System Diseases               | 
              | Immune Disorders, Nervous System use Autoimmune Diseases of the Nervous System               | 
              | Immune Escape, Tumor use Tumor Escape               | 
              | Immune Globulin, Rh use Rho(D) Immune Globulin               | 
              | Immune Globulins use Immunoglobulins               | 
              | Immune Monitoring use Monitoring, Immunologic               | 
              | Immune Precipitates use Precipitins               | 
              | Immune Reconstitution Disease use Immune Reconstitution Inflammatory Syndrome               | 
              | Immune Reconstitution Inflammatory Syndrome               | 
              | Immune Response Antigens use Histocompatibility Antigens Class II               | 
              | Immune Response Genes use Genes, MHC Class II               | 
              | Immune Response, Mucosal use Immunity, Mucosal               | 
              | Immune Response-Associated Antigens, Human use HLA-D Antigens               | 
              | Immune Restoration Syndrome use Immune Reconstitution Inflammatory Syndrome               | 
              | Immune RNA Manipulation use Immunotherapy, Active               | 
              | Immune Sera               | 
              | Immune System               | 
              | Immune System Diseases               | 
              | Immune System Phenomena               | 
              | Immune System Processes               | 
              | Immune Tolerance               | 
              | Immune-Associated Antigens use Histocompatibility Antigens Class II               | 
              | Immune-Associated Antigens, Human use HLA-D Antigens               | 
              | Immune-Response Antigens, Human use HLA-D Antigens               | 
              | Immune-Response-Associated Antigens use Histocompatibility Antigens Class II               | 
              | Immunity               | 
              | Immunity, Active               | 
              | Immunity, Cellular               | 
              | Immunity, Herd               | 
              | Immunity, Humoral use Antibody Formation               | 
              | Immunity, Innate               | 
              | Immunity, Maternally-Acquired               | 
              | Immunity, Mucosal               | 
              | Immunity, Native use Immunity, Innate               | 
              | Immunity, Natural use Immunity, Innate               | 
              | Immunity, Non-Specific use Immunity, Innate               | 
              | Immunization               | 
              | Immunization Coverage               | 
              | Immunization Programs               | 
              | Immunization Schedule               | 
              | Immunization, Active use Vaccination               | 
              | Immunization, Booster use Immunization, Secondary               | 
              | Immunization, Passive               | 
              | Immunization, Secondary               | 
              | Immunoactivators use Adjuvants, Immunologic               | 
              | Immunoadhesins, CD4 use CD4 Immunoadhesins               | 
              | Immunoadjuvants use Adjuvants, Immunologic               | 
              | Immunoadsorbent Techniques use Immunosorbent Techniques               | 
              | Immunoadsorbents use Immunosorbents               | 
              | Immunoassay               | 
              | Immunoassay, Enzyme use Immunoenzyme Techniques               | 
              | Immunoassay, Fluorescence Polarization use Fluorescence Polarization Immunoassay               | 
              | Immunoblastic Large-Cell Lymphoma use Lymphoma, Large-Cell, Immunoblastic               | 
              | Immunoblastic Lymphadenopathy               | 
              | Immunoblastic Lymphosarcoma, Diffuse use Lymphoma, Large-Cell, Immunoblastic               | 
              | Immunoblastoma use Lymphoma, Large-Cell, Immunoblastic               | 
              | Immunoblotting               | 
              | Immunoblotting, Western use Blotting, Western               | 
              | Immunochemistry               | 
              | Immunocompatibility use Histocompatibility               | 
              | Immunocompetence               | 
              | Immunocompromised Host               | 
              | Immunoconglutinins               | 
              | Immunoconjugates               | 
              | Immunocontraception use Contraception, Immunologic               | 
              | Immunocytoadherence use Rosette Formation               | 
              | Immunocytochemistry use Immunohistochemistry               | 
              | Immunodeficiency Syndrome, Acquired use Acquired Immunodeficiency Syndrome               | 
              | Immunodeficiency Virus, Bovine               | 
              | Immunodeficiency Virus, Feline               | 
              | Immunodeficiency Viruses, Primate use Lentiviruses, Primate               | 
              | Immunodeficiency, Common Variable use Common Variable Immunodeficiency               | 
              | Immunodeficiency, Severe Combined use Severe Combined Immunodeficiency               | 
              | Immunodiagnosis use Immunologic Tests               | 
              | Immunodiffusion               | 
              | Immunodominant Epitopes               | 
              | Immunoelectroblotting use Immunoblotting               | 
              | Immunoelectron Microscopy use Microscopy, Immunoelectron               | 
              | Immunoelectroosmophoresis use Counterimmunoelectrophoresis               | 
              | Immunoelectrophoresis               | 
              | Immunoelectrophoresis, Countercurrent use Counterimmunoelectrophoresis               | 
              | Immunoelectrophoresis, Crossed use Immunoelectrophoresis, Two-Dimensional               | 
              | Immunoelectrophoresis, Crossover use Counterimmunoelectrophoresis               | 
              | Immunoelectrophoresis, Two-Dimensional               | 
              | Immunoenzyme Techniques               | 
              | Immunofluorescence Antibody Test, Direct use Fluorescent Antibody Technique, Direct               | 
              | Immunofluorescence Antibody Test, Indirect use Fluorescent Antibody Technique, Indirect               | 
              | Immunofluorescence Microscopy use Microscopy, Fluorescence               | 
              | Immunofluorescence Technique use Fluorescent Antibody Technique               | 
              | Immunofluorescence Technique, Direct use Fluorescent Antibody Technique, Direct               | 
              | Immunofluorescence Technique, Indirect use Fluorescent Antibody Technique, Indirect               | 
              | Immunofluorometric Assay use Fluoroimmunoassay               | 
              | Immunogenetic Concepts use Immunogenetic Phenomena               | 
              | Immunogenetic Phenomena               | 
              | Immunogenetic Processes               | 
              | Immunogenetics               | 
              | Immunogens, Synthetic use Vaccines, Synthetic               | 
              | Immunoglobulin A               | 
              | Immunoglobulin A Nephropathy use Glomerulonephritis, IGA               | 
              | Immunoglobulin A, Secretory               | 
              | Immunoglobulin Allotypes               | 
              | Immunoglobulin alpha-Chains               | 
              | Immunoglobulin Class Switching               | 
              | Immunoglobulin Constant Region use Immunoglobulin Constant Regions               | 
              | Immunoglobulin Constant Regions               | 
              | Immunoglobulin D               | 
              | Immunoglobulin delta-Chains               | 
              | Immunoglobulin E               | 
              | Immunoglobulin Enhancer-Binding Protein use NF-kappa B               | 
              | Immunoglobulin epsilon-Chains               | 
              | Immunoglobulin Fab Fragments               | 
              | Immunoglobulin Fc Fragments               | 
              | Immunoglobulin Fragments               | 
              | Immunoglobulin G               | 
              | Immunoglobulin gamma-Chains               | 
              | Immunoglobulin Genes use Genes, Immunoglobulin               | 
              | Immunoglobulin Gm Allotypes               | 
              | Immunoglobulin Heavy Chain Genes use Genes, Immunoglobulin Heavy Chain               | 
              | Immunoglobulin Heavy Chains               | 
              | Immunoglobulin Idiotypes               | 
              | Immunoglobulin Inv Allotypes use Immunoglobulin Km Allotypes               | 
              | Immunoglobulin Isotypes               | 
              | Immunoglobulin J Recombination Signal Sequence-Binding Protein               | 
              | Immunoglobulin J-Chains               | 
              | Immunoglobulin Joining Region               | 
              | Immunoglobulin kappa-Chains               | 
              | Immunoglobulin Km Allotypes               | 
              | Immunoglobulin lambda-Chains               | 
              | Immunoglobulin Light Chains               | 
              | Immunoglobulin Light Chains, Surrogate               | 
              | Immunoglobulin M               | 
              | Immunoglobulin mu-Chains               | 
              | Immunoglobulin Recombinases use VDJ Recombinases               | 
              | Immunoglobulin Somatic Hypermutation use Somatic Hypermutation, Immunoglobulin               | 
              | Immunoglobulin Subunits               | 
              | Immunoglobulin Switch Region               | 
              | Immunoglobulin Therapy use Immunization, Passive               | 
              | Immunoglobulin Variable Region               | 
              | Immunoglobulin-Producing Cells use Antibody-Producing Cells               | 
              | Immunoglobulin-Secreting Cells use Antibody-Producing Cells               | 
              | Immunoglobulins               | 
              | Immunoglobulins, alpha-Chain use Immunoglobulin alpha-Chains               | 
              | Immunoglobulins, delta-Chain use Immunoglobulin delta-Chains               | 
              | Immunoglobulins, epsilon-Chain use Immunoglobulin epsilon-Chains               | 
              | Immunoglobulins, Fab Fragment use Immunoglobulin Fab Fragments               | 
              | Immunoglobulins, gamma-Chain use Immunoglobulin gamma-Chains               | 
              | Immunoglobulins, Heavy-Chain use Immunoglobulin Heavy Chains               | 
              | Immunoglobulins, Intravenous               | 
              | Immunoglobulins, kappa-Chain use Immunoglobulin kappa-Chains               | 
              | Immunoglobulins, lambda-Chain use Immunoglobulin lambda-Chains               | 
              | Immunoglobulins, Light-Chain use Immunoglobulin Light Chains               | 
              | Immunoglobulins, mu-Chain use Immunoglobulin mu-Chains               | 
              | Immunoglobulins, Oligoclonal use Oligoclonal Bands               | 
              | Immunoglobulins, Thyroid-Stimulating               | 
              | Immunogold Techniques use Immunohistochemistry               | 
              | Immunogold-Silver Techniques use Immunohistochemistry               | 
              | Immunohistochemistry               | 
              | Immunohistocytochemistry use Immunohistochemistry               | 
              | Immunolabeling Techniques use Immunohistochemistry               | 
              | Immunologic Accessory Cells use Antigen-Presenting Cells               | 
              | Immunologic Capping               | 
              | Immunologic Competence use Immunocompetence               | 
              | Immunologic Deficiency Syndrome, Acquired use Acquired Immunodeficiency Syndrome               | 
              | Immunologic Deficiency Syndromes               | 
              | Immunologic Diseases use Immune System Diseases               | 
              | Immunologic Enhancement of Grafts use Graft Enhancement, Immunologic               | 
              | Immunologic Factors               | 
              | Immunologic Markers use Biological Markers               | 
              | Immunologic Memory               | 
              | Immunologic Monitoring use Monitoring, Immunologic               | 
              | Immunologic Receptors use Receptors, Immunologic               | 
              | Immunologic Stimulation use Immunization               | 
              | Immunologic Suppressor Factors use Suppressor Factors, Immunologic               | 
              | Immunologic Surveillance               | 
              | Immunologic Techniques               | 
              | Immunologic Tests               | 
              | Immunological Models use Models, Immunological               | 
              | Immunological Synapses               | 
              | Immunology use Allergy and Immunology               | 
              | Immunology, Transplantation use Transplantation Immunology               | 
              | Immunomagnetic Bead Technique use Immunomagnetic Separation               | 
              | Immunomagnetic Purging use Immunomagnetic Separation               | 
              | Immunomagnetic Separation               | 
              | Immunomodulators use Immunologic Factors               | 
              | Immunoperoxidase Techniques use Immunoenzyme Techniques               | 
              | Immunophenotyping               | 
              | Immunophilins               | 
              | Immunopotentiators use Adjuvants, Immunologic               | 
              | Immunoprecipitation               | 
              | Immunoprecipitation, Chromatin use Chromatin Immunoprecipitation               | 
              | Immunoproliferative Disorders               | 
              | Immunoproliferative Small Intestinal Disease               | 
              | Immunoproteins               | 
              | Immunoradiometric Assay               | 
              | Immunoscintigraphy, Radiolabeled use Radioimmunodetection               | 
              | Immunosorbent Techniques               | 
              | Immunosorbents               | 
              | Immunostimulants use Adjuvants, Immunologic               | 
              | Immunostimulating Complexes use ISCOMs               | 
              | Immunostimulation use Immunization               | 
              | Immunosuppressed Host use Immunocompromised Host               | 
              | Immunosuppression               | 
              | Immunosuppression (Physiology) use Immune Tolerance               | 
              | Immunosuppressive Agents               | 
              | Immunosurveillance use Monitoring, Immunologic               | 
              | Immunotherapy               | 
              | Immunotherapy, Active               | 
              | Immunotherapy, Adoptive               | 
              | Immunotherapy, Allergen use Desensitization, Immunologic               | 
              | Immunotherapy, Passive use Immunization, Passive               | 
              | Immunotoxins               | 
              | IMP use Inosine Monophosphate               | 
              | IMP Dehydrogenase               | 
              | IMP Nucleotidase use 5'-Nucleotidase               | 
              | IMP Phosphatase use 5'-Nucleotidase               | 
              | IMP Pyrophosphorylase use Hypoxanthine Phosphoribosyltransferase               | 
              | Impact Assessment use Evaluation               | 
              | Impact Evaluation use Evaluation Studies as Topic               | 
              | Impact Factor               | 
              | Impact in the Health Condition use Health Evaluation               | 
              | Impact of Disasters               | 
              | Impact Production               | 
              | Impact Seizure use Epilepsy, Post-Traumatic               | 
              | Impacts on Health               | 
              | Impatiens               | 
              | Impatiens necrotic spot virus use Tospovirus               | 
              | Impedance use Electric Impedance               | 
              | Impedance Tests, Acoustic use Acoustic Impedance Tests               | 
              | Impedance, Transthoracic use Cardiography, Impedance               | 
              | Imperata use Poaceae               | 
              | Imperatoria ostruthium               | 
              | Impervious Lining               | 
              | Impervious Soils               | 
              | Impetigo               | 
              | Impetigo Contagiosa use Impetigo               | 
              | Impila use Callilepis               | 
              | Implant Radiotherapy use Brachytherapy               | 
              | Implant, Middle Ear use Ossicular Prosthesis               | 
              | Implant-Supported Dental Prosthesis use Dental Prosthesis, Implant-Supported               | 
              | Implantable Cardioverter-Defibrillators use Defibrillators, Implantable               | 
              | Implantable Catheters use Catheters, Indwelling               | 
              | Implantable Defibrillators use Defibrillators, Implantable               | 
              | Implantable Infusion Pumps use Infusion Pumps, Implantable               | 
              | Implantation, Blastocyst use Embryo Implantation               | 
              | Implantation, Ovum, Delayed use Embryo Implantation, Delayed               | 
              | Implants, Absorbable use Absorbable Implants               | 
              | Implants, Artificial use Prostheses and Implants               | 
              | Implants, Breast use Breast Implants               | 
              | Implants, Cochlear use Cochlear Implants               | 
              | Implants, Dental use Dental Implants               | 
              | Implants, Experimental               | 
              | Implants, Molteno use Molteno Implants               | 
              | Implosive Therapy               | 
              | Importation of Products               | 
              | Imported Products use Importation of Products               | 
              | Importins use Karyopherins               | 
              | Impotence use Erectile Dysfunction               | 
              | Impotence, Arteriogenic use Impotence, Vasculogenic               | 
              | Impotence, Vasculogenic               | 
              | Impotence, Venogenic use Impotence, Vasculogenic               | 
              | Impounding Discharge               | 
              | Impoundings               | 
              | Imprinting (Psychology)               | 
              | Impromidine               | 
              | Imprudence               | 
              | Impulse Control Disorders               | 
              | Impulse-Ridden Personality use Personality Disorders               | 
              | Impulsive Behavior               | 
              | Impulsive Petit Mal, Janz use Myoclonic Epilepsy, Juvenile               | 
              | Imputability               | 
              | In Situ Disposal               | 
              | In Situ Hybridization               | 
              | In Situ Hybridization, Fluorescence               | 
              | In Situ Labeling, Primed use Primed In Situ Labeling               | 
              | In Situ Nick-End Labeling               | 
              | In Vitro               | 
              | In Vitro Assays in Homeopathy use Basic Homeopathic Research               | 
              | In Vitro Research in Homeopathy use Basic Homeopathic Research               | 
              | In Vivo NMR Spectroscopy use Magnetic Resonance Spectroscopy               | 
              | In-Hospital Mortality use Hospital Mortality               | 
              | Inactive Population               | 
              | Inadequate Personality use Personality Disorders               | 
              | Inappropriate ACTH Secretion Syndrome use Pituitary ACTH Hypersecretion               | 
              | Inappropriate ADH Syndrome               | 
              | Inappropriate Adrenocorticotropic Hormone Secretion use Pituitary ACTH Hypersecretion               | 
              | Inappropriate Follicle Stimulating Hormone Secretion use Hyperpituitarism               | 
              | Inappropriate FSH Secretion Syndrome use Hyperpituitarism               | 
              | Inappropriate Growth Hormone Secretion Syndrome (Acromegaly) use Acromegaly               | 
              | Inappropriate LH Secretion Syndrome use Hyperpituitarism               | 
              | Inappropriate Luteinizing Hormone Secretion use Hyperpituitarism               | 
              | Inappropriate Thyroid Stimulating Hormone Secretion use Hyperpituitarism               | 
              | Inappropriate TSH Secretion Syndrome use Hyperpituitarism               | 
              | Inappropriate Vasopressin Secretion Syndrome use Inappropriate ADH Syndrome               | 
              | Inborn Errors of Metabolism use Metabolism, Inborn Errors               | 
              | Inborn Errors of Metabolism, Brain use Brain Diseases, Metabolic, Inborn               | 
              | Inbreeding               | 
              | Inbreeding, Human use Consanguinity               | 
              | Incandescence               | 
              | INCAP use Food and Nutrition Foundation of Central America and Panama               | 
              | Incentive Plans, Employee use Employee Incentive Plans               | 
              | Incentive Plans, Physician use Physician Incentive Plans               | 
              | Incentive Reimbursement use Reimbursement, Incentive               | 
              | Incentives use Motivation               | 
              | Incentives for Private Investment on Research and Development               | 
              | Incest               | 
              | Incidence               | 
              | Incidence Rate use Incidence               | 
              | Incidence Studies use Cohort Studies               | 
              | Incident Reporting, Hospital use Risk Management               | 
              | Incidental Findings               | 
              | Incineration               | 
              | Incinerators               | 
              | Incipient Schizophrenia use Schizotypal Personality Disorder               | 
              | Incisive Papilla use Palate               | 
              | Incisor               | 
              | Inclusion Bodies               | 
              | Inclusion Bodies, Intranuclear use Intranuclear Inclusion Bodies               | 
              | Inclusion Bodies, Viral               | 
              | Inclusion Body Myositis use Myositis, Inclusion Body               | 
              | Inclusion Disease use Cytomegalovirus Infections               | 
              | Income               | 
              | Income Tax               | 
              | Incompatible Drugs use Drug Incompatibility               | 
              | Incompatible Waste               | 
              | Incompetency, Mental use Mental Competency               | 
              | Incomplete Viruses use Defective Viruses               | 
              | Incontinence Pads               | 
              | Incontinentia Pigmenti               | 
              | Incontinentia Pigmenti Achromians use Pigmentation Disorders               | 
              | Incoordination use Ataxia               | 
              | Increased Gravity use Hypergravity               | 
              | Increasing Dynamization use Increasing Scale               | 
              | Increasing Scale               | 
              | Incretins               | 
              | Incrustant Water use Water Hardness               | 
              | Incubators               | 
              | Incubators, Infant               | 
              | Incunabula               | 
              | Incurable Patients               | 
              | Incus               | 
              | Indans               | 
              | Indantrione Monohydrate use Ninhydrin               | 
              | Indapamide               | 
              | Indazoles               | 
              | INDEL Mutation               | 
              | Indenes               | 
              | Independent Living use Activities of Daily Living               | 
              | Independent Practice Associations               | 
              | Independent State of Samoa               | 
              | Index Medicus use MEDLINE               | 
              | Indexes               | 
              | Indexes as Topic use Abstracting and Indexing as Topic               | 
              | Indexing as Topic use Abstracting and Indexing as Topic               | 
              | India               | 
              | Indian Corn use Zea mays               | 
              | Indian Fig Opuntia use Opuntia ficus               | 
              | Indian Finger Millet use Eleusine               | 
              | Indian Health Service (U.S.) use United States Indian Health Service               | 
              | Indian Laburnum use Cassia               | 
              | Indian Ocean               | 
              | Indian Ocean Islands               | 
              | Indiana               | 
              | Indians, Central American               | 
              | Indians, North American               | 
              | Indians, South American               | 
              | Indican               | 
              | Indicator Dilution Techniques               | 
              | Indicators               | 
              | Indicators and Reagents               | 
              | Indicators of Health Services               | 
              | Indicators of Morbidity and Mortality               | 
              | Indicators of Quality of Life               | 
              | Indigency use Poverty               | 
              | Indigency, Medical use Medical Indigency               | 
              | Indigenous Communities use Indigenous Population               | 
              | Indigenous Farmers use Indigenous Population               | 
              | Indigenous Health               | 
              | Indigenous Organizations               | 
              | Indigenous Population               | 
              | Indigenous' Health use Indigenous Health               | 
              | Indigent Care use Uncompensated Care               | 
              | Indigestion use Dyspepsia               | 
              | Indigo Carmine use Indigotindisulfonate Sodium               | 
              | Indigo tinctoria               | 
              | Indigofera               | 
              | Indigotindisulfonate Sodium               | 
              | Indinavir               | 
              | Indirect Parameters               | 
              | Indispositions               | 
              | Indium               | 
              | Indium Metallicum               | 
              | Indium Radioisotopes               | 
              | Individual Differences use Individuality               | 
              | Individual Diseases               | 
              | Individual Health Care Services use Health Services               | 
              | Individual Practice Associations use Independent Practice Associations               | 
              | Individuality               | 
              | Individuation               | 
              | Indocyanine Green               | 
              | Indole Alkaloids               | 
              | Indole-3-Glycerol-Phosphate Synthase               | 
              | Indoleacetic Acids               | 
              | Indoleamine-Pyrrole 2,3,-Dioxygenase               | 
              | Indolequinones               | 
              | Indoles               | 
              | Indolizidines               | 
              | Indolizines               | 
              | Indolum               | 
              | Indolylethylamines use Tryptamines               | 
              | Indomethacin               | 
              | Indonesia               | 
              | Indonesian New Guinea use Indonesia               | 
              | Indoor Air               | 
              | Indoor Air Pollution use Air Pollution, Indoor               | 
              | Indoor Air Quality use Air Pollution, Indoor               | 
              | Indophenol               | 
              | Indoprofen               | 
              | Indoramin               | 
              | Indri use Strepsirhini               | 
              | Indriidae use Strepsirhini               | 
              | Induced Seismicity               | 
              | Inducer Cells use T-Lymphocytes, Helper-Inducer               | 
              | Industrial Areas use Industrial Zones               | 
              | Industrial Arts use Technology               | 
              | Industrial Chimneys               | 
              | Industrial Dentistry use Occupational Dentistry               | 
              | Industrial Development use Industrialization (Environmental Health)               | 
              | Industrial Disaster               | 
              | Industrial Effluent Treatment               | 
              | Industrial Effluents               | 
              | Industrial Effluents Disposal               | 
              | Industrial Equipment use Plant Equipment               | 
              | Industrial Expansion use Industrialization (Environmental Health)               | 
              | Industrial Feeding use Collective Feeding               | 
              | Industrial Fires               | 
              | Industrial Fumes use Industrial Pollutants               | 
              | Industrial Health use Occupational Health               | 
              | Industrial Hygiene use Occupational Health               | 
              | Industrial Medicine use Occupational Medicine               | 
              | Industrial Microbiology               | 
              | Industrial Nursing use Occupational Health Nursing               | 
              | Industrial Oils               | 
              | Industrial Parks use Industrial Zones               | 
              | Industrial Pollutants               | 
              | Industrial Pollution               | 
              | Industrial Progress use Industrialization (Environmental Health)               | 
              | Industrial Projects               | 
              | Industrial Safety               | 
              | Industrial Sanitation               | 
              | Industrial Settlements use Industrial Zones               | 
              | Industrial Sludges               | 
              | Industrial Sources use Industrial Pollutants               | 
              | Industrial Waste               | 
              | Industrial Wastewater use Industrial Effluents               | 
              | Industrial Water               | 
              | Industrial Water Consumption               | 
              | Industrial Zones               | 
              | Industrialization use Industry               | 
              | Industrialization (Environmental Health)               | 
              | Industrialized Countries use Developed Countries               | 
              | Industrialized Foods               | 
              | Industry               | 
              | Industry Safety use Industrial Safety               | 
              | Inequality in Health use Health Inequalities               | 
              | Inequity use Social Inequity               | 
              | Inert Gas Narcosis               | 
              | Inertia               | 
              | Infant               | 
              | Infant Behavior               | 
              | Infant Care               | 
              | Infant Development use Child Development               | 
              | Infant Equipment               | 
              | Infant Food               | 
              | Infant Formula               | 
              | Infant Furniture use Infant Equipment               | 
              | Infant Health use Infant Welfare               | 
              | Infant Health Services use Child Health Services               | 
              | Infant Malnutrition use Infant Nutrition Disorders               | 
              | Infant Mortality               | 
              | Infant Mortality by Specific Risk use Infant Mortality               | 
              | Infant Mortality Rate               | 
              | Infant Mortality, Late use Late Infant Mortality               | 
              | Infant Nutrition               | 
              | Infant Nutrition Disorders               | 
              | Infant Nutrition Physiology use Infant Nutritional Physiological Phenomena               | 
              | Infant Nutritional Physiological Phenomena               | 
              | Infant Psychology use Child Psychology               | 
              | Infant Radiant Warmers use Incubators, Infant               | 
              | Infant Strollers use Infant Equipment               | 
              | Infant Swings use Infant Equipment               | 
              | Infant Walkers use Infant Equipment               | 
              | Infant Welfare               | 
              | Infant, Extremely Low Birth Weight               | 
              | Infant, Low Birth Weight               | 
              | Infant, Newborn               | 
              | Infant, Newborn, Diseases               | 
              | Infant, Newborn, Intensive Care use Intensive Care, Neonatal               | 
              | Infant, Newborn, Screening use Neonatal Screening               | 
              | Infant, Postmature               | 
              | Infant, Premature               | 
              | Infant, Premature, Diseases               | 
              | Infant, Small for Gestational Age               | 
              | Infant, Very Low Birth Weight               | 
              | Infanticide               | 
              | Infantile Cortical Hyperostosis use Hyperostosis, Cortical, Congenital               | 
              | Infantile Papular Acrodermatitis use Acrodermatitis               | 
              | Infantile Paralysis use Poliomyelitis               | 
              | Infantile Refsum Disease use Refsum Disease, Infantile               | 
              | Infantile Sialic Acid Storage Disease use Sialic Acid Storage Disease               | 
              | Infantile Spasms use Spasms, Infantile               | 
              | Infantile Spinal Muscular Atrophy use Spinal Muscular Atrophies of Childhood               | 
              | Infarction               | 
              | Infarction, Anterior Cerebral Artery               | 
              | Infarction, Cerebral use Cerebral Infarction               | 
              | Infarction, Middle Cerebral Artery               | 
              | Infarction, Posterior Cerebral Artery               | 
              | Infection               | 
              | Infection Control               | 
              | Infection Control Practitioners               | 
              | Infection Control Services, Hospital               | 
              | Infection Control, Dental               | 
              | Infections, Cardiovascular use Cardiovascular Infections               | 
              | Infectious Anemia Virus, Equine               | 
              | Infectious Arteritis Virus, Equine use Arteritis Virus, Equine               | 
              | Infectious Bovine Rhinotracheitis               | 
              | Infectious Bovine Rhinotracheitis Virus use Herpesvirus 1, Bovine               | 
              | Infectious bronchitis virus               | 
              | Infectious Bursal Agent use Infectious bursal disease virus               | 
              | Infectious bursal disease virus               | 
              | Infectious Disease Contact Tracing use Contact Tracing               | 
              | Infectious Disease Incubation Period               | 
              | Infectious Disease Medicine               | 
              | Infectious Disease Reporting use Disease Notification               | 
              | Infectious Disease Transmission, Patient-to-Professional               | 
              | Infectious Disease Transmission, Professional-to-Patient               | 
              | Infectious Disease Transmission, Vertical               | 
              | Infectious Diseases use Communicable Diseases               | 
              | Infectious Diseases Specialty use Infectious Disease Medicine               | 
              | Infectious Diseases, Emerging use Communicable Diseases, Emerging               | 
              | Infectious Encephalomyelitis, Viral use Encephalitis, Viral               | 
              | Infectious Enteritis Virus of Mink use Mink enteritis virus               | 
              | Infectious Enteritis Virus, Feline use Feline panleukopenia virus               | 
              | Infectious hematopoietic necrosis virus               | 
              | Infectious hypodermal and hematopoietic necrosis virus use Densovirinae               | 
              | Infectious Keratoconjunctivitis use Keratoconjunctivitis, Infectious               | 
              | Infectious Mononucleosis               | 
              | Infectious Mononucleosis Virus use Herpesvirus 4, Human               | 
              | Infectious Mononucleosis-Like Syndrome, Chronic use Fatigue Syndrome, Chronic               | 
              | Infectious pancreatic necrosis virus               | 
              | Infectious Peritonitis Virus, Feline use Coronavirus, Feline               | 
              | Infectious Pustular Vulvovaginitis Virus use Herpesvirus 1, Bovine               | 
              | Infectious salmon anemia virus use Isavirus               | 
              | Infectology use Infectious Disease Medicine               | 
              | Inferior Colliculi               | 
              | Inferior Petrosal Sinus Sampling use Petrosal Sinus Sampling               | 
              | Inferior Pulvinar Nucleus use Pulvinar               | 
              | Inferior Vena Cava Filters use Vena Cava Filters               | 
              | Infertility               | 
              | Infertility Agents use Fertility Agents               | 
              | Infertility Agents, Female use Fertility Agents, Female               | 
              | Infertility, Female               | 
              | Infertility, Male               | 
              | Infertility, Plant use Plant Infertility               | 
              | Infibulation use Circumcision, Female               | 
              | Infiltration Galleries               | 
              | Infiltration-Percolation Ditches               | 
              | Infinitesimal Dose use Small Doses               | 
              | Inflammable Wastes               | 
              | Inflammation               | 
              | Inflammation Mediators               | 
              | Inflammation, Brain use Encephalitis               | 
              | Inflammation, Endodontic use Pulpitis               | 
              | Inflammation, Perinephrium use Perinephritis               | 
              | Inflammatory Bowel Diseases               | 
              | Inflammatory Myopathy use Myositis               | 
              | Inflammatory Pseudotumor of Lung use Plasma Cell Granuloma, Pulmonary               | 
              | Inflammatory Pseudotumor, Orbital use Orbital Pseudotumor               | 
              | Inflammatory Response Syndrome, Systemic use Systemic Inflammatory Response Syndrome               | 
              | Inflation, Economic               | 
              | Influence of Aliments use Modalities, Alimentary               | 
              | Influenza A virus               | 
              | Influenza A Virus, H1N1 Subtype               | 
              | Influenza A Virus, H2N2 Subtype               | 
              | Influenza A Virus, H3N2 Subtype               | 
              | Influenza A Virus, H3N8 Subtype               | 
              | Influenza A Virus, H5N1 Subtype               | 
              | Influenza A Virus, H5N2 Subtype               | 
              | Influenza A Virus, H7N7 Subtype               | 
              | Influenza A Virus, H9N2 Subtype               | 
              | Influenza B virus               | 
              | Influenza C Virus use Influenzavirus C               | 
              | Influenza D Virus use Thogotovirus               | 
              | Influenza in Birds               | 
              | Influenza in Humans use Influenza, Human               | 
              | Influenza Vaccines               | 
              | Influenza Virus, Equine use Influenza A Virus, H3N8 Subtype               | 
              | Influenza Viruses use Orthomyxoviridae               | 
              | Influenza Viruses Type A use Influenza A virus               | 
              | Influenza Viruses Type B use Influenza B virus               | 
              | Influenza Viruses Type C use Influenzavirus C               | 
              | Influenza Viruses Type D use Thogotovirus               | 
              | Influenza, Avian use Influenza in Birds               | 
              | Influenza, Human               | 
              | Influenzavirus A               | 
              | Influenzavirus B               | 
              | Influenzavirus C               | 
              | Influenzavirus D use Thogotovirus               | 
              | Influenzinum               | 
              | Informatics               | 
              | Information               | 
              | Information Centers               | 
              | Information Disclosure use Disclosure               | 
              | Information Display use Data Display               | 
              | Information Dissemination               | 
              | Information Exchange               | 
              | Information Management               | 
              | Information Processing, Automatic use Automatic Data Processing               | 
              | Information Processing, Human use Mental Processes               | 
              | Information Products and Services               | 
              | Information Retrieval use Information Storage and Retrieval               | 
              | Information Retrieval Systems use Information Systems               | 
              | Information Science               | 
              | Information Services               | 
              | Information Society Indicators               | 
              | Information Storage and Retrieval               | 
              | Information Systems               | 
              | Information Technologies and Communication Projects               | 
              | Information Technology               | 
              | Information Theory               | 
              | Informed Consent               | 
              | Informed Consent Forms use Consent Forms               | 
              | Infrared Rays               | 
              | Infrared Spectrophotometry use Spectrophotometry, Infrared               | 
              | Infrastructure               | 
              | Infrastructure Projects               | 
              | Infratentorial Neoplasms               | 
              | Infratentorial Tumors use Infratentorial Neoplasms               | 
              | Infundibular Nucleus use Arcuate Nucleus               | 
              | Infundibular Stalk use Pituitary Gland, Posterior               | 
              | Infundibular Stem use Pituitary Gland, Posterior               | 
              | Infundibular Stenosis, Pulmonary use Pulmonary Subvalvular Stenosis               | 
              | Infundibulum (Hypophysis) use Pituitary Gland, Posterior               | 
              | Infundibulum, Hypophyseal use Pituitary Gland, Posterior               | 
              | Infusion Pumps               | 
              | Infusion Pumps, External use Infusion Pumps               | 
              | Infusion Pumps, Implantable               | 
              | Infusion Therapy, Home use Home Infusion Therapy               | 
              | Infusions, Intra-Arterial               | 
              | Infusions, Intra-Osseous use Infusions, Intraosseous               | 
              | Infusions, Intralesional               | 
              | Infusions, Intraosseous               | 
              | Infusions, Intravenous               | 
              | Infusions, Parenteral               | 
              | Infusions, Regional Arterial use Infusions, Intra-Arterial               | 
              | Infusions, Subcutaneous               | 
              | Infusorial Earth use Diatomaceous Earth               | 
              | Infusors use Infusion Pumps               | 
              | Inguinal Canal               | 
              | Inguinal Hernia use Hernia, Inguinal               | 
              | Inhalation               | 
              | Inhalation Anesthetics use Anesthetics, Inhalation               | 
              | Inhalation Burns use Burns, Inhalation               | 
              | Inhalation Devices use Nebulizers and Vaporizers               | 
              | Inhalation Drug Administration use Administration, Inhalation               | 
              | Inhalation Exposure               | 
              | Inhalation Injury, Smoke use Smoke Inhalation Injury               | 
              | Inhalation of Drugs use Administration, Inhalation               | 
              | Inhalation Provocation Tests use Bronchial Provocation Tests               | 
              | Inhalation Spacers               | 
              | Inhalation Therapy use Respiratory Therapy               | 
              | Inhalators use Nebulizers and Vaporizers               | 
              | Inhalers use Nebulizers and Vaporizers               | 
              | Inhalers, Metered Dose use Metered Dose Inhalers               | 
              | Inhaling use Inhalation               | 
              | Inheritance Patterns               | 
              | Inherited Coagulation Disorders use Blood Coagulation Disorders, Inherited               | 
              | Inhibin-beta Subunits               | 
              | Inhibins               | 
              | Inhibition (Psychology)               | 
              | Inhibition, Neural use Neural Inhibition               | 
              | Inhibitor of Apoptosis Proteins               | 
              | Inhibitor of Differentiation Protein 1               | 
              | Inhibitor of Differentiation Protein 2               | 
              | Inhibitor of Differentiation Proteins               | 
              | Inhibitory Concentration 50               | 
              | Inhibitory Postsynaptic Potentials               | 
              | Inhibitory Smad Proteins use Smad Proteins, Inhibitory               | 
              | Initial Reconstruction and Return to Normality               | 
              | Initiation Factors use Peptide Initiation Factors               | 
              | Initiator Codon use Codon, Initiator               | 
              | Initiator tRNA use RNA, Transfer, Met               | 
              | Injections               | 
              | Injections, Endolymphatic use Injections, Intralymphatic               | 
              | Injections, Epidural               | 
              | Injections, Intra-Arterial               | 
              | Injections, Intra-Articular               | 
              | Injections, Intradermal               | 
              | Injections, Intralesional               | 
              | Injections, Intralymphatic               | 
              | Injections, Intramuscular               | 
              | Injections, Intraperitoneal               | 
              | Injections, Intraspinal use Injections, Spinal               | 
              | Injections, Intrathecal use Injections, Spinal               | 
              | Injections, Intravenous               | 
              | Injections, Intraventricular               | 
              | Injections, Jet               | 
              | Injections, Sclerosing use Sclerosing Solutions               | 
              | Injections, Sperm, Intracytoplasmic use Sperm Injections, Intracytoplasmic               | 
              | Injections, Spinal               | 
              | Injections, Subcutaneous               | 
              | Injuries use Wounds and Injuries               | 
              | Injuries, Multiple use Multiple Trauma               | 
              | Injuries, Nonpenetrating use Wounds, Nonpenetrating               | 
              | Injuries, Poisonings, and Occupational Diseases use Disorders of Environmental Origin               | 
              | Injury Severity Score               | 
              | Ink               | 
              | Ink Blot Tests               | 
              | INK4 Cyclin-Dependent Kinase Inhibitors use Cyclin-Dependent Kinase Inhibitor Proteins               | 
              | Inlay Casting Wax               | 
              | Inlays               | 
              | Inlets use Stormwater Inlets               | 
              | INN use International Nonproprietary Names for Pharmaceutical Substances               | 
              | Innate Behavior use Instinct               | 
              | Inner Cell Mass, Blastocyst use Blastocyst Inner Cell Mass               | 
              | Inner Ear Disease use Labyrinth Diseases               | 
              | Inner Mongolia use China               | 
              | Innominate Artery use Brachiocephalic Trunk               | 
              | Innominate Veins use Brachiocephalic Veins               | 
              | Innovation               | 
              | Innovation and Development Policy               | 
              | Innovation Diffusion use Diffusion of Innovation               | 
              | Innovator Drugs use Reference Drugs               | 
              | Inoculation Lymphoreticulosis use Cat-Scratch Disease               | 
              | Inorganic Acids               | 
              | Inorganic Carbon Compounds use Carbon Compounds, Inorganic               | 
              | Inorganic Chemicals               | 
              | Inorganic Chemistry use Chemistry, Inorganic               | 
              | Inorganic Particles               | 
              | Inorganic Pollutants               | 
              | Inorganic Pollutants in Foods use Food Pollutants, Inorganic               | 
              | Inorganic Pyrophosphatase               | 
              | Inorganic Substances use Inorganic Chemicals               | 
              | Inorganic Tracers               | 
              | Inosinate Phosphatase use 5'-Nucleotidase               | 
              | Inosine               | 
              | Inosine Cyclic 3',5'-Monophosphate use Cyclic IMP               | 
              | Inosine Diphosphate               | 
              | Inosine Monophosphate               | 
              | Inosine Nucleotides               | 
              | Inosine Phosphates use Inosine Nucleotides               | 
              | Inosine Phosphorylase use Purine-Nucleoside Phosphorylase               | 
              | Inosine Polynucleotides use Poly I               | 
              | Inosine Pranobex               | 
              | Inosine Triphosphate               | 
              | Inosinic Acid use Inosine Monophosphate               | 
              | Inosinic Acid Dehydrogenase use IMP Dehydrogenase               | 
              | Inosiplex use Inosine Pranobex               | 
              | Inositol               | 
              | Inositol 1,2-Cyclic Phosphate 2-Phosphohydrolase use Glycerophosphoinositol Inositolphosphodiesterase               | 
              | Inositol 1,4,5-Triphosphate use Inositol 1,4,5-Trisphosphate               | 
              | Inositol 1,4,5-Triphosphate Receptors use Inositol 1,4,5-Trisphosphate Receptors               | 
              | Inositol 1,4,5-Trisphosphate               | 
              | Inositol 1,4,5-Trisphosphate Receptors               | 
              | Inositol Cyclase use Myo-Inositol-1-Phosphate Synthase               | 
              | Inositol Hexaphosphate use Phytic Acid               | 
              | Inositol Oxygenase               | 
              | Inositol Phosphates               | 
              | Inositol Phosphoglycerides use Phosphatidylinositols               | 
              | Inositol-1-Phosphate Synthase use Myo-Inositol-1-Phosphate Synthase               | 
              | Inotropic Agents, Positive Cardiac use Cardiotonic Agents               | 
              | Inotropism use Muscle Contraction               | 
              | Inotropism, Cardiac use Myocardial Contraction               | 
              | Inoviridae               | 
              | Inovirus               | 
              | Inpatient Care Units               | 
              | Inpatients               | 
              | INR use International Normalized Ratio               | 
              | Insanity Defense               | 
              | Insect Bites and Stings               | 
              | Insect Control               | 
              | Insect Genes use Genes, Insect               | 
              | Insect Genome use Genome, Insect               | 
              | Insect Growth Regulators use Juvenile Hormones               | 
              | Insect Hormones               | 
              | Insect Parvoviruses use Densovirus               | 
              | Insect Proteins               | 
              | Insect Repellents               | 
              | Insect Vectors               | 
              | Insect Viruses               | 
              | Insecticide Resistance               | 
              | Insecticides               | 
              | Insecticides, Organochlorine               | 
              | Insecticides, Organophosphate               | 
              | Insecticides, Organophosphate, Antagonists use Cholinesterase Reactivators               | 
              | Insecticides, Organothiophosphate use Insecticides, Organophosphate               | 
              | Insecticides, Organothiophosphate, Antagonists use Cholinesterase Reactivators               | 
              | Insectivora               | 
              | Insects               | 
              | Insecure Labor Conditions use Occupational Risks               | 
              | Insemination               | 
              | Insemination, Artificial               | 
              | Insemination, Artificial, Heterologous               | 
              | Insemination, Artificial, Homologous               | 
              | Insemination, Artificial, Human Donor use Insemination, Artificial, Heterologous               | 
              | Insemination, Artificial, Husband use Insemination, Artificial, Homologous               | 
              | Insensitivity to Pain with Anhidrosis, Congenital use Hereditary Sensory and Autonomic Neuropathies               | 
              | Insertion Mutation use Mutagenesis, Insertional               | 
              | Insertion Sequence Elements use DNA Transposable Elements               | 
              | Insertional Activation use Mutagenesis, Insertional               | 
              | Insertional Mutagenesis use Mutagenesis, Insertional               | 
              | Inservice Training               | 
              | Insignia use Emblems and Insignia               | 
              | Insomnia use Sleep Initiation and Maintenance Disorders               | 
              | Insomnia, Fatal Familial               | 
              | Inspection Chambers use Inspection Manholes               | 
              | Inspection Manholes               | 
              | Inspiratory Capacity               | 
              | Inspiratory Positive-Pressure Breathing use Intermittent Positive-Pressure Breathing               | 
              | Inspiratory Positive-Pressure Ventilation use Intermittent Positive-Pressure Ventilation               | 
              | Inspiratory Reserve Volume               | 
              | Instability Indexes               | 
              | Instability, Joint use Joint Instability               | 
              | Installations for Disaster Victims               | 
              | Instillation, Bladder use Administration, Intravesical               | 
              | Instillation, Drug               | 
              | Instillation, Rectal use Administration, Rectal               | 
              | Instillation, Vaginal use Administration, Intravaginal               | 
              | Instinct               | 
              | Institute of Medicine (U.S.)               | 
              | Institutes use Academies and Institutes               | 
              | Institutional Adherence use Guideline Adherence               | 
              | Institutional Aspects use Institutional Development               | 
              | Institutional Development               | 
              | Institutional Ethics Committees use Ethics Committees               | 
              | Institutional Evaluation               | 
              | Institutional Feeding use Collective Feeding               | 
              | Institutional Liability use Liability, Legal               | 
              | Institutional Management Teams               | 
              | Institutional Organization               | 
              | Institutional Personnel Licensure use Licensure               | 
              | Institutional Policy use Organizational Policy               | 
              | Institutional Practice               | 
              | Institutional Review Boards use Ethics Committees, Research               | 
              | Institutional Tax use Taxes               | 
              | Institutionalization               | 
              | Institutionalized Adolescent use Adolescent, Institutionalized               | 
              | Institutionalized Adolescent Health use Health of Institutionalized Adolescents               | 
              | Institutionalized Child use Child, Institutionalized               | 
              | Institutionalized Child Health use Health of Institutionalized Children               | 
              | Institutionalized Elderly Health use Health of Institutionalized Elderly               | 
              | Institutionalized Population               | 
              | Institutions use Institutional Development               | 
              | Institutions and Organizations for Measurement               | 
              | Instruction               | 
              | Instructional Models use Models, Educational               | 
              | Instructional Technology use Educational Technology               | 
              | Instrumental Learning use Conditioning, Operant               | 
              | Instruments for Management of Scientific Activity               | 
              | Insufficient Sleep Syndrome use Sleep Deprivation               | 
              | Insufflation               | 
              | Insufflation Anesthesia use Anesthesia, Inhalation               | 
              | Insufflation Radiography use Pneumoradiography               | 
              | Insula of Reil use Cerebral Cortex               | 
              | Insulator Elements               | 
              | Insulin               | 
              | Insulin Antagonists               | 
              | Insulin Antibodies               | 
              | Insulin Coma               | 
              | Insulin Coma Therapy use Convulsive Therapy               | 
              | Insulin Infusion Systems               | 
              | Insulin Receptor use Receptor, Insulin               | 
              | Insulin Receptor alpha Subunit use Receptor, Insulin               | 
              | Insulin Receptor beta Subunit use Receptor, Insulin               | 
              | Insulin Receptor Protein-Tyrosine Kinase use Receptor, Insulin               | 
              | Insulin Receptor Substrate Proteins               | 
              | Insulin Resistance               | 
              | Insulin Resistance Syndrome X use Metabolic Syndrome X               | 
              | Insulin, Isophane use Insulin, NPH               | 
              | Insulin, Long-Acting               | 
              | Insulin, NPH               | 
              | Insulin-Like Growth Factor Binding Protein 1               | 
              | Insulin-Like Growth Factor Binding Protein 2               | 
              | Insulin-Like Growth Factor Binding Protein 3               | 
              | Insulin-Like Growth Factor Binding Protein 4               | 
              | Insulin-Like Growth Factor Binding Protein 5               | 
              | Insulin-Like Growth Factor Binding Protein 6               | 
              | Insulin-Like Growth Factor Binding Proteins               | 
              | Insulin-Like Growth Factor I               | 
              | Insulin-Like Growth Factor II               | 
              | Insulin-Like Growth Factors use Somatomedins               | 
              | Insulin-Secreting Cells               | 
              | Insulinase use Insulysin               | 
              | Insulinoma               | 
              | Insulinum               | 
              | Insuloma use Insulinoma               | 
              | Insulysin               | 
              | Insurance               | 
              | Insurance Audit use Insurance Claim Review               | 
              | Insurance Benefits               | 
              | Insurance Carriers               | 
              | Insurance Case Management use Managed Care Programs               | 
              | Insurance Claim Reporting               | 
              | Insurance Claim Review               | 
              | Insurance Claims Processing use Insurance Claim Review               | 
              | Insurance Coverage               | 
              | Insurance Pools               | 
              | Insurance Selection Bias               | 
              | Insurance Status use Insurance Coverage               | 
              | Insurance, Accident               | 
              | Insurance, Dental               | 
              | Insurance, Disability               | 
              | Insurance, Health               | 
              | Insurance, Health, Catastrophic use Insurance, Major Medical               | 
              | Insurance, Health, for Aged and Disabled use Medicare               | 
              | Insurance, Health, Reimbursement               | 
              | Insurance, Hospitalization               | 
              | Insurance, Liability               | 
              | Insurance, Life               | 
              | Insurance, Long-Term Care               | 
              | Insurance, Major Medical               | 
              | Insurance, Medigap               | 
              | Insurance, Nursing Services               | 
              | Insurance, Pharmaceutical Services               | 
              | Insurance, Physician Services               | 
              | Insurance, Psychiatric               | 
              | Insurance, Surgical               | 
              | Insurers use Insurance Carriers               | 
              | Intake Works               | 
              | Integral Membrane Proteins use Membrane Proteins               | 
              | Integrase use Integrases               | 
              | Integrase Inhibitors               | 
              | Integrase Inhibitors, HIV use HIV Integrase Inhibitors               | 
              | Integrases               | 
              | Integrated Academic Information Management Systems use Integrated Advanced Information Management Systems               | 
              | Integrated Advanced Information Management Systems               | 
              | Integrated Delivery Systems use Delivery of Health Care, Integrated               | 
              | Integrated Health Care Systems use Delivery of Health Care, Integrated               | 
              | Integrated Management of Childhood Illness               | 
              | Integrated Management of Water Resources use Integrated Water Resource Management               | 
              | Integrated Water Resource Management               | 
              | Integration Host Factor use Integration Host Factors               | 
              | Integration Host Factors               | 
              | Integration, Prophage use Lysogeny               | 
              | Integration, Provirus use Virus Integration               | 
              | Integration, Virus use Virus Integration               | 
              | Integrative Medicine               | 
              | Integrin alpha Chains               | 
              | Integrin alpha1               | 
              | Integrin alpha1beta1               | 
              | Integrin alpha2               | 
              | Integrin alpha2beta1               | 
              | Integrin alpha3               | 
              | Integrin alpha3beta1               | 
              | Integrin alpha4               | 
              | Integrin alpha4beta1               | 
              | Integrin alpha5               | 
              | Integrin alpha5beta1               | 
              | Integrin alpha6               | 
              | Integrin alpha6B use Integrin alpha6               | 
              | Integrin alpha6beta1               | 
              | Integrin alpha6beta4               | 
              | Integrin alphaIIb use Platelet Membrane Glycoprotein IIb               | 
              | Integrin alphaIIbbeta3 use Platelet Glycoprotein GPIIb-IIIa Complex               | 
              | Integrin alphaM use Antigens, CD11b               | 
              | Integrin alphaMbeta2 use Macrophage-1 Antigen               | 
              | Integrin alphaV               | 
              | Integrin alphaVbeta3               | 
              | Integrin alphaX use Antigens, CD11c               | 
              | Integrin alphaXbeta2               | 
              | Integrin beta Chains               | 
              | Integrin beta1 use Antigens, CD29               | 
              | Integrin beta2 use Antigens, CD18               | 
              | Integrin beta3               | 
              | Integrin beta3A use Integrin beta3               | 
              | Integrin beta3B use Integrin beta3               | 
              | Integrin beta3C use Integrin beta3               | 
              | Integrin beta4               | 
              | Integrins               | 
              | Integrons               | 
              | Integumentary System               | 
              | Integumentary System Physiological Phenomena               | 
              | Inteins               | 
              | Intellectual Property               | 
              | Intellectual Property of Pharmaceutic Products and Process               | 
              | Intelligence               | 
              | Intelligence Tests               | 
              | Intensity, Macroseismic               | 
              | Intensive Care               | 
              | Intensive Care Units               | 
              | Intensive Care Units, Neonatal               | 
              | Intensive Care Units, Pediatric               | 
              | Intensive Care, Neonatal               | 
              | Intensive Care, Surgical use Intensive Care               | 
              | Intent               | 
              | Intention               | 
              | Intention Tremor use Tremor               | 
              | Inter-American Development Bank               | 
              | Interactive Tutorial               | 
              | Interagency Relations use Interinstitutional Relations               | 
              | Interbasin Transfer               | 
              | Intercalated Neurons use Interneurons               | 
              | Intercalating Agents               | 
              | Intercalators use Intercalating Agents               | 
              | Intercarpal Joints use Carpal Joints               | 
              | Intercellular Adhesion Molecule-1               | 
              | Intercellular Adhesion Molecules use Cell Adhesion Molecules               | 
              | Intercellular Junctions               | 
              | Intercellular Signaling Peptides and Proteins               | 
              | Intercellular Space use Extracellular Space               | 
              | Intercepting Channels               | 
              | Intercepting Sewers               | 
              | Interchange of Drugs               | 
              | Intercostal Muscles               | 
              | Intercostal Nerves               | 
              | Intercrines use Chemokines               | 
              | Interdental Papilla use Gingiva               | 
              | Interdepartmental Relations               | 
              | Interdigitating Cells use Dendritic Cells               | 
              | Interdigitating Dendritic Cell Sarcoma use Dendritic Cell Sarcoma, Interdigitating               | 
              | Interdisciplinary Communication               | 
              | Interdisciplinary Health Team use Patient Care Team               | 
              | Interdisciplinary Research               | 
              | Interface, User Computer use User-Computer Interface               | 
              | Interfascicular Oligodendroglia use Oligodendroglia               | 
              | Interferometry               | 
              | Interferometry, Microscopic use Microscopy, Interference               | 
              | Interferon alfa use Interferon-alpha               | 
              | Interferon alfa, Recombinant use Interferon Type I, Recombinant               | 
              | Interferon Alfa-2a               | 
              | Interferon Alfa-2b               | 
              | Interferon Alfa-2c               | 
              | Interferon alpha, Recombinant use Interferon Type I, Recombinant               | 
              | Interferon alpha-beta Receptor use Receptor, Interferon alpha-beta               | 
              | Interferon beta, Recombinant use Interferon Type I, Recombinant               | 
              | Interferon gamma-1b use Interferon-gamma, Recombinant               | 
              | Interferon gamma-2a use Interferon-gamma, Recombinant               | 
              | Interferon Inducers               | 
              | Interferon Receptors use Receptors, Interferon               | 
              | Interferon Regulatory Factor-1               | 
              | Interferon Regulatory Factor-2               | 
              | Interferon Regulatory Factor-3               | 
              | Interferon Regulatory Factor-7               | 
              | Interferon Regulatory Factors               | 
              | Interferon Type I               | 
              | Interferon Type I, Recombinant               | 
              | Interferon Type II use Interferon-gamma               | 
              | Interferon Type II, Recombinant use Interferon-gamma, Recombinant               | 
              | Interferon, Fibroblast use Interferon-beta               | 
              | Interferon, Immune use Interferon-gamma               | 
              | Interferon, Leukocyte use Interferon-alpha               | 
              | Interferon, Lymphoblast use Interferon-alpha               | 
              | Interferon-alpha               | 
              | Interferon-beta               | 
              | Interferon-gamma               | 
              | Interferon-gamma, Recombinant               | 
              | Interferon-gamma-Inducing Factor use Interleukin-18               | 
              | Interferon-Stimulated Gene Factor 3               | 
              | Interferon-Stimulated Gene Factor 3, alpha Subunit               | 
              | Interferon-Stimulated Gene Factor 3, gamma Subunit               | 
              | Interferons               | 
              | Intergeneration Interval               | 
              | Intergenerational Relations               | 
              | Intergenic DNA use DNA, Intergenic               | 
              | Interinstitutional Relations               | 
              | Interior Design and Furnishings               | 
              | Interior Furnishings use Interior Design and Furnishings               | 
              | Interleukin 1 Receptor Antagonist Protein               | 
              | Interleukin 18 Receptors use Receptors, Interleukin-18               | 
              | Interleukin Enhancer Binding Factor 2 use Nuclear Factor 45 Protein               | 
              | Interleukin Enhancer Binding Factor 3 use Nuclear Factor 90 Proteins               | 
              | Interleukin Receptor Common gamma Subunit               | 
              | Interleukin Receptors use Receptors, Interleukin               | 
              | Interleukin-1               | 
              | Interleukin-1 Receptor Accessory Protein               | 
              | Interleukin-1 Receptor Type I use Receptors, Interleukin-1 Type I               | 
              | Interleukin-1 Receptor Type II use Receptors, Interleukin-1 Type II               | 
              | Interleukin-1 Receptor-Associated Kinases               | 
              | Interleukin-1 Receptors use Receptors, Interleukin-1               | 
              | Interleukin-1 Receptors Type I use Receptors, Interleukin-1 Type I               | 
              | Interleukin-10               | 
              | Interleukin-10 Receptor alpha Chain use Interleukin-10 Receptor alpha Subunit               | 
              | Interleukin-10 Receptor alpha Subunit               | 
              | Interleukin-10 Receptor beta Subunit               | 
              | Interleukin-10 Receptors use Receptors, Interleukin-10               | 
              | Interleukin-11               | 
              | Interleukin-11 Receptor alpha Subunit               | 
              | Interleukin-11 Receptors use Receptors, Interleukin-11               | 
              | Interleukin-12               | 
              | Interleukin-12 Receptor beta 1 Subunit               | 
              | Interleukin-12 Receptor beta 2 Subunit               | 
              | Interleukin-12 Receptors use Receptors, Interleukin-12               | 
              | Interleukin-12 Subunit p35               | 
              | Interleukin-12 Subunit p40               | 
              | Interleukin-13               | 
              | Interleukin-13 Receptor alpha1 Subunit               | 
              | Interleukin-13 Receptor alpha2 Subunit               | 
              | Interleukin-13 Receptors use Receptors, Interleukin-13               | 
              | Interleukin-15               | 
              | Interleukin-15 Receptor alpha Subunit               | 
              | Interleukin-15 Receptor beta Subunit use Interleukin-2 Receptor beta Subunit               | 
              | Interleukin-15 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit               | 
              | Interleukin-15 Receptors use Receptors, Interleukin-15               | 
              | Interleukin-16               | 
              | Interleukin-16 Receptors use Receptors, Interleukin-16               | 
              | Interleukin-17               | 
              | Interleukin-17 Receptors use Receptors, Interleukin-17               | 
              | Interleukin-18               | 
              | Interleukin-18 Receptor alpha Subunit               | 
              | Interleukin-18 Receptor beta Subunit               | 
              | Interleukin-1alpha               | 
              | Interleukin-1beta               | 
              | Interleukin-1beta Converting Enzyme use Caspase 1               | 
              | Interleukin-2               | 
              | Interleukin-2 Receptor alpha Subunit               | 
              | Interleukin-2 Receptor beta Subunit               | 
              | Interleukin-2 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit               | 
              | Interleukin-2 Receptors use Receptors, Interleukin-2               | 
              | Interleukin-2 Receptors alpha use Interleukin-2 Receptor alpha Subunit               | 
              | Interleukin-2, 15 Receptor beta Subunit use Interleukin-2 Receptor beta Subunit               | 
              | Interleukin-21 Receptor alpha Subunit               | 
              | Interleukin-21 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit               | 
              | Interleukin-21 Receptors use Receptors, Interleukin-21               | 
              | Interleukin-23               | 
              | Interleukin-23 Subunit p19               | 
              | Interleukin-3               | 
              | Interleukin-3 Receptor alpha Subunit               | 
              | Interleukin-3 Receptor beta Subunit use Cytokine Receptor Common beta Subunit               | 
              | Interleukin-3 Receptors use Receptors, Interleukin-3               | 
              | Interleukin-4               | 
              | Interleukin-4 Receptor alpha Subunit               | 
              | Interleukin-4 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit               | 
              | Interleukin-4 Receptors use Receptors, Interleukin-4               | 
              | Interleukin-4 Receptors, Type I use Receptors, Interleukin-4, Type I               | 
              | Interleukin-4 Receptors, Type II use Receptors, Interleukin-4, Type II               | 
              | Interleukin-4, 13 Receptor Shared Subunit use Interleukin-13 Receptor alpha1 Subunit               | 
              | Interleukin-4, 13 Shared Receptor use Receptors, Interleukin-4, Type II               | 
              | Interleukin-5               | 
              | Interleukin-5 Receptor alpha Subunit               | 
              | Interleukin-5 Receptor beta Subunit use Cytokine Receptor Common beta Subunit               | 
              | Interleukin-5 Receptors use Receptors, Interleukin-5               | 
              | Interleukin-6               | 
              | Interleukin-6 Receptor alpha Subunit               | 
              | Interleukin-6 Receptors use Receptors, Interleukin-6               | 
              | Interleukin-7               | 
              | Interleukin-7 Receptor alpha Subunit               | 
              | Interleukin-7 Receptor gamma Subunit use Interleukin Receptor Common gamma Subunit               | 
              | Interleukin-7 Receptors use Receptors, Interleukin-7               | 
              | Interleukin-8               | 
              | Interleukin-8 Receptors use Receptors, Interleukin-8               | 
              | Interleukin-8A Receptors use Receptors, Interleukin-8A               | 
              | Interleukin-8B Receptors use Receptors, Interleukin-8B               | 
              | Interleukin-9               | 
              | Interleukin-9 Receptors use Receptors, Interleukin-9               | 
              | Interleukins               | 
              | Interlibrary Loans               | 
              | Intermediate Care Facilities               | 
              | Intermediate Filament Proteins               | 
              | Intermediate Filaments               | 
              | Intermediate Hypothalamic Region use Hypothalamus, Middle               | 
              | Intermediate Lobe of Pituitary use Pituitary Gland, Intermediate               | 
              | Intermediate Technology               | 
              | Intermediate-Conductance Calcium-Activated Potassium Channels               | 
              | Intermetatarsal Joint use Foot Joints               | 
              | Intermittent Claudication               | 
              | Intermittent Explosive Disorder use Impulse Control Disorders               | 
              | Intermittent Pneumatic Compression Devices               | 
              | Intermittent Positive-Pressure Breathing               | 
              | Intermittent Positive-Pressure Ventilation               | 
              | Intermittent Wetlands use Swamps               | 
              | Internal Advisory Committee on Research               | 
              | Internal Capsule               | 
              | Internal Carotid Artery Dissection use Carotid Artery, Internal, Dissection               | 
              | Internal Fixators               | 
              | Internal Hazard               | 
              | Internal Mammary Artery use Mammary Arteries               | 
              | Internal Mammary Artery Implantation use Myocardial Revascularization               | 
              | Internal Mammary-Coronary Artery Anastomosis               | 
              | Internal Mechanisms of Disasters Production               | 
              | Internal Medicine               | 
              | Internal Migration               | 
              | Internal Rules               | 
              | Internal Thoracic Artery use Mammary Arteries               | 
              | Internal-External Control               | 
              | International Acts               | 
              | International Agencies               | 
              | International Agreements               | 
              | International Assistance in Disaster               | 
              | International Bank for Reconstruction and Development               | 
              | International Certificate of Vaccination or Prophylaxis               | 
              | International Classification of Disabilities use International Classification of Functioning, Disability and Health               | 
              | International Classification of Diseases               | 
              | International Classification of Functioning, Disability and Health               | 
              | International Classification of Hazardous Goods               | 
              | International Commitments use International Acts               | 
              | International Conventions use International Acts               | 
              | International Cooperation               | 
              | International Council of Nurses               | 
              | International Declarations use International Acts               | 
              | International Development Research Centre               | 
              | International Educational Exchange               | 
              | International Health Problems use World Health               | 
              | International Humanitarian Law               | 
              | International Immunization Certificate use International Certificate of Vaccination or Prophylaxis               | 
              | International Law               | 
              | International Network of Information and Knowledge Sources for Sciences, Technology and Information Management               | 
              | International Non-Proprietary Name use International Nonproprietary Names for Pharmaceutical Substances               | 
              | International Non-Proprietary Names for Pharmaceutical Substances use International Nonproprietary Names for Pharmaceutical Substances               | 
              | International Nonproprietary Name use International Nonproprietary Names for Pharmaceutical Substances               | 
              | International Nonproprietary Names use International Nonproprietary Names for Pharmaceutical Substances               | 
              | International Nonproprietary Names for Pharmaceutical Substances               | 
              | International Normalized Ratio               | 
              | International Organization               | 
              | International Pacts use International Acts               | 
              | International Research Information System               | 
              | International Sanitary Regulation               | 
              | International Statistical Classification of Diseases and Related Health Problems use International Classification of Diseases               | 
              | International System of Units               | 
              | International Treaties use International Acts               | 
              | International Vaccination Certificate use International Certificate of Vaccination or Prophylaxis               | 
              | International Vaccination Certificate or Prophylaxis use International Certificate of Vaccination or Prophylaxis               | 
              | International Water               | 
              | International Water and Sanitation Decade               | 
              | Internationality               | 
              | Internet               | 
              | Interneurons               | 
              | Internment Units use Inpatient Care Units               | 
              | Internship and Residency               | 
              | Internship, Dental use Internship and Residency               | 
              | Internship, Nonmedical               | 
              | Internuclear Ophthalmoplegia use Ocular Motility Disorders               | 
              | Interobserver Variation use Observer Variation               | 
              | Interparental Conflict use Family Conflict               | 
              | Interpersonal Relations               | 
              | Interphalangeal Joint of Foot use Toe Joint               | 
              | Interphalangeal Joint of Hand use Finger Joint               | 
              | Interphalangeal Joints of Foot use Toe Joint               | 
              | Interphase               | 
              | Interplanetary Dust use Cosmic Dust               | 
              | Interpleural Analgesia               | 
              | Interprofessional Relations               | 
              | Interrelation               | 
              | Interrelation by Hazard               | 
              | Interrelation by Negative Effects               | 
              | Interrenal Gland               | 
              | Interruption of Services Supply               | 
              | Intersectorial Action               | 
              | Intersectorial Action for Health use Intersectorial Action               | 
              | Intersectorial Coordination use Intersectorial Action               | 
              | Intersexuality use Hermaphroditism               | 
              | Interspersed Repetitive Elements use Interspersed Repetitive Sequences               | 
              | Interspersed Repetitive Sequences               | 
              | Interstellar Dust use Cosmic Dust               | 
              | Interstitial Cell Tumor use Leydig Cell Tumor               | 
              | Interstitial Cell-Stimulating Hormone use Luteinizing Hormone               | 
              | Interstitial Cells, Testicular use Leydig Cells               | 
              | Interstitial Collagenase use Matrix Metalloproteinase 1               | 
              | Interstitial Cystitis use Cystitis, Interstitial               | 
              | Interstitial Fluid use Extracellular Fluid               | 
              | Interstitial Lung Diseases use Lung Diseases, Interstitial               | 
              | Interstitial Nephritis use Nephritis, Interstitial               | 
              | Intertarsal Joint use Tarsal Joints               | 
              | Intertidal Zone               | 
              | Intertrigo               | 
              | Intertrochanteric Fractures use Hip Fractures               | 
              | Intertropical Convergence Zone               | 
              | Intervening Sequences use Introns               | 
              | Intervention Studies               | 
              | Interventional Magnetic Resonance Imaging use Magnetic Resonance Imaging, Interventional               | 
              | Intervertebral Disk               | 
              | Intervertebral Disk Chemolysis               | 
              | Intervertebral Disk Displacement               | 
              | Interview               | 
              | Interview, Psychological               | 
              | Interviewer Effect use Effect Modifiers (Epidemiology)               | 
              | Interviews as Topic               | 
              | Intestinal Absorption               | 
              | Intestinal Amebiasis use Dysentery, Amebic               | 
              | Intestinal Atresia               | 
              | Intestinal Biotherapics of Bach-Paterson use Bacillus Bach-Paterson               | 
              | Intestinal Bypass use Jejunoileal Bypass               | 
              | Intestinal Cancer use Intestinal Neoplasms               | 
              | Intestinal Contents use Gastrointestinal Contents               | 
              | Intestinal Diseases               | 
              | Intestinal Diseases, Parasitic               | 
              | Intestinal Epithelium use Intestinal Mucosa               | 
              | Intestinal Fistula               | 
              | Intestinal Hormone Receptors use Receptors, Gastrointestinal Hormone               | 
              | Intestinal Hormones use Gastrointestinal Hormones               | 
              | Intestinal L Cells use Enteroendocrine Cells               | 
              | Intestinal Motility use Gastrointestinal Motility               | 
              | Intestinal Mucosa               | 
              | Intestinal Neoplasms               | 
              | Intestinal Obstruction               | 
              | Intestinal of Bach-Paterson use Bacillus Bach-Paterson               | 
              | Intestinal Perforation               | 
              | Intestinal Polyposis               | 
              | Intestinal Polyps               | 
              | Intestinal Pseudo-Obstruction               | 
              | Intestinal Secretin Cells use Enteroendocrine Cells               | 
              | Intestinal Secretions               | 
              | Intestinal Volvulus               | 
              | Intestine, Large               | 
              | Intestine, Small               | 
              | Intestines               | 
              | Intoxication use Poisoning               | 
              | Intoxication, Alcoholic use Alcoholic Intoxication               | 
              | Intra-Abdominal Fat               | 
              | Intra-Abdominal Infusions use Infusions, Parenteral               | 
              | Intra-Aortic Balloon Pumping               | 
              | Intra-Arterial Lines use Catheters, Indwelling               | 
              | Intracellular Calcium-Sensing Proteins               | 
              | Intracellular Fluid               | 
              | Intracellular Membranes               | 
              | Intracellular Second Messengers use Second Messenger Systems               | 
              | Intracellular Signaling Peptides and Proteins               | 
              | Intracellular Space               | 
              | Intracerebral Hemorrhage use Cerebral Hemorrhage               | 
              | Intracerebral Hemorrhage, Hypertensive use Intracranial Hemorrhage, Hypertensive               | 
              | Intracerebral Hemorrhage, Traumatic use Cerebral Hemorrhage, Traumatic               | 
              | Intracerebral Pressure use Intracranial Pressure               | 
              | Intracisternal A-Particle Elements use Genes, Intracisternal A-Particle               | 
              | Intracisternal A-Particle Genes use Genes, Intracisternal A-Particle               | 
              | Intracoronal Attachment use Denture Precision Attachment               | 
              | Intracranial Aneurysm               | 
              | Intracranial Arterial Diseases               | 
              | Intracranial Arteriosclerosis               | 
              | Intracranial Arteriovenous Malformations               | 
              | Intracranial Arteriovenous Malformations, Congenital use Intracranial Arteriovenous Malformations               | 
              | Intracranial Atherosclerosis use Intracranial Arteriosclerosis               | 
              | Intracranial Central Nervous System Disorders use Brain Diseases               | 
              | Intracranial Edema use Brain Edema               | 
              | Intracranial Embolism               | 
              | Intracranial Embolism and Thrombosis               | 
              | Intracranial Gas use Pneumocephalus               | 
              | Intracranial Hemorrhage, Hypertensive               | 
              | Intracranial Hemorrhage, Traumatic               | 
              | Intracranial Hemorrhages               | 
              | Intracranial Hypertension               | 
              | Intracranial Hypotension               | 
              | Intracranial Hypotension, Essential use Intracranial Hypotension               | 
              | Intracranial Hypotension, Secondary use Intracranial Hypotension               | 
              | Intracranial Hypotension, Spontaneous use Intracranial Hypotension               | 
              | Intracranial Meningeal Neoplasms use Meningeal Neoplasms               | 
              | Intracranial Pressure               | 
              | Intracranial Sinus Thrombophlebitis use Sinus Thrombosis, Intracranial               | 
              | Intracranial Subdural Hematoma use Hematoma, Subdural, Intracranial               | 
              | Intracranial Thrombosis               | 
              | Intracranial Toxoplasmosis use Toxoplasmosis, Cerebral               | 
              | Intracranial Tuberculoma use Tuberculoma, Intracranial               | 
              | Intracranial Vascular Disorders use Cerebrovascular Disorders               | 
              | Intracranial Vasospasm use Vasospasm, Intracranial               | 
              | Intracytoplasmic Sperm Injections use Sperm Injections, Intracytoplasmic               | 
              | Intradermal Tests               | 
              | Intradural-Extramedullary Spinal Cord Neoplasms use Spinal Cord Neoplasms               | 
              | Intrahepatic Cholestasis use Cholestasis, Intrahepatic               | 
              | Intralaminar Nuclear Group use Intralaminar Thalamic Nuclei               | 
              | Intralaminar Thalamic Nuclei               | 
              | Intramedullary Nailing use Fracture Fixation, Intramedullary               | 
              | Intramedullary Spinal Cord Neoplasms use Spinal Cord Neoplasms               | 
              | Intramolecular Lyases               | 
              | Intramolecular Oxidoreductases               | 
              | Intramolecular Transferases               | 
              | Intranets use Computer Communication Networks               | 
              | Intranuclear Inclusion Bodies               | 
              | Intranuclear Space               | 
              | Intraobserver Variation use Observer Variation               | 
              | Intraocular Fluid use Aqueous Humor               | 
              | Intraocular Pressure               | 
              | Intraoperative Care               | 
              | Intraoperative Complications               | 
              | Intraoperative Monitoring use Monitoring, Intraoperative               | 
              | Intraoperative Period               | 
              | Intraosseous Ganglion use Bone Cysts               | 
              | Intraperitoneal Infusions use Infusions, Parenteral               | 
              | Intrapleural Analgesia use Interpleural Analgesia               | 
              | Intraspinal Injections use Injections, Spinal               | 
              | Intrathecal Injections use Injections, Spinal               | 
              | Intrauterine Cross-Transfusion use Fetofetal Transfusion               | 
              | Intrauterine Device Expulsion               | 
              | Intrauterine Devices               | 
              | Intrauterine Devices, Copper               | 
              | Intrauterine Devices, Medicated               | 
              | Intrauterine Diagnosis use Prenatal Diagnosis               | 
              | Intrauterine Growth Retardation use Fetal Growth Retardation               | 
              | Intrauterine Transfusion use Blood Transfusion, Intrauterine               | 
              | Intravaginal Administration use Administration, Intravaginal               | 
              | Intravenous Anesthetics use Anesthetics, Intravenous               | 
              | Intravenous Antibodies use Immunoglobulins, Intravenous               | 
              | Intravenous Drip use Infusions, Intravenous               | 
              | Intravenous Drug Abuse use Substance Abuse, Intravenous               | 
              | Intravenous Drug Delivery Systems use Infusion Pumps               | 
              | Intravenous Feeding use Parenteral Nutrition               | 
              | Intravenous Hyperalimentation use Parenteral Nutrition, Total               | 
              | Intravenous Immunoglobulins use Immunoglobulins, Intravenous               | 
              | Intravenous Infusions use Infusions, Intravenous               | 
              | Intraventricular Neoplasms use Cerebral Ventricle Neoplasms               | 
              | Intravesical Drug Administration use Administration, Intravesical               | 
              | Intrinsic Factor               | 
              | Intrinsic Sleep Disorders use Sleep Disorders, Intrinsic               | 
              | Introductory Journal Article               | 
              | Introns               | 
              | Introns, Protein use Inteins               | 
              | Introversion (Psychology)               | 
              | Intubation               | 
              | Intubation, Endotracheal use Intubation, Intratracheal               | 
              | Intubation, Gastrointestinal               | 
              | Intubation, Intratracheal               | 
              | Intubation, Nasogastric use Intubation, Gastrointestinal               | 
              | Intuition               | 
              | Intussusception               | 
              | Inuits               | 
              | Inula               | 
              | Inula helenium               | 
              | Inulin               | 
              | Inupiats use Inuits               | 
              | Inv Allotypes use Immunoglobulin Km Allotypes               | 
              | Invagination, Intestinal use Intussusception               | 
              | Invasion of Deaths               | 
              | Invasive Mole use Hydatidiform Mole, Invasive               | 
              | Invasive Pulmonary Aspergillosis               | 
              | Invasiveness, Neoplasm use Neoplasm Invasiveness               | 
              | Inventories use Census               | 
              | Inventories, Hospital               | 
              | Inverse PCR use Polymerase Chain Reaction               | 
              | Inversion, Chromosome               | 
              | Invertebrate Ganglia use Ganglia, Invertebrate               | 
              | Invertebrate Hormones               | 
              | Invertebrate Peptide Receptors use Receptors, Invertebrate Peptide               | 
              | Invertebrate Photoreceptors use Photoreceptor Cells, Invertebrate               | 
              | Invertebrates               | 
              | Inverted Repeat Sequences               | 
              | Inverted Terminal Repeat use Terminal Repeat Sequences               | 
              | Investigation of Disease Outbreaks use Disease Outbreaks               | 
              | Investigational New Drug Application               | 
              | Investigational New Drugs use Drugs, Investigational               | 
              | Investigational Therapies use Therapies, Investigational               | 
              | Investigative Techniques               | 
              | Investments               | 
              | Investments in Health use Investments               | 
              | Involuntary Commitment use Commitment of Mentally Ill               | 
              | Involuntary Movements use Dyskinesias               | 
              | Inward Rectifier Potassium Channels use Potassium Channels, Inwardly Rectifying               | 
              | Io use Jupiter               | 
              | Iobenguane use 3-Iodobenzylguanidine               | 
              | Iodamide               | 
              | Iodamoebiasis use Amebiasis               | 
              | Iodates               | 
              | Iodide Peroxidase               | 
              | Iodides               | 
              | Iodinase use Iodide Peroxidase               | 
              | Iodinated Hydrocarbons use Hydrocarbons, Iodinated               | 
              | Iodination use Halogenation               | 
              | Iodination (Environmental Health)               | 
              | Iodine               | 
              | Iodine Compounds               | 
              | Iodine Deficiency               | 
              | Iodine Disinfection use Iodination (Environmental Health)               | 
              | Iodine Isotopes               | 
              | Iodine Radioisotopes               | 
              | Iodine-123-IMP use Iofetamine               | 
              | Iodipamide               | 
              | Iodium Purum               | 
              | Iodized Oil               | 
              | Iodoacetamide               | 
              | Iodoacetate use Iodoacetates               | 
              | Iodoacetates               | 
              | Iodoacetic Acid               | 
              | Iodobenzenes               | 
              | Iodobenzoates               | 
              | Iodobenzoylglycine use Iodohippuric Acid               | 
              | Iodochlorhydroxyquin use Clioquinol               | 
              | Iodochloroxyquinoline use Clioquinol               | 
              | Iodocyanopindolol               | 
              | Iododeoxyuridine use Idoxuridine               | 
              | Iodoformium               | 
              | Iodogorgoic Acid use Diiodotyrosine               | 
              | Iodohippuric Acid               | 
              | Iodopanoic Acid use Iopanoic Acid               | 
              | Iodophors               | 
              | Iodoproteins               | 
              | Iodopyracet               | 
              | Iodopyridones               | 
              | Iodoquinol               | 
              | Iodothyrinum use Thyreoidinum               | 
              | Iodothyronine 5'-Deiodinase use Iodide Peroxidase               | 
              | Iodothyronine Deiodinase use Iodide Peroxidase               | 
              | Iodotyrosine use Monoiodotyrosine               | 
              | Iodotyrosine Deiodase use Iodide Peroxidase               | 
              | Iofetamine               | 
              | Ioglycamic Acid               | 
              | Ioglycamide use Ioglycamic Acid               | 
              | Iohexol               | 
              | Ion Channel Gating               | 
              | Ion Channels               | 
              | Ion Channels, Calcium use Calcium Channels               | 
              | Ion Channels, Chloride use Chloride Channels               | 
              | Ion Channels, Potassium use Potassium Channels               | 
              | Ion Channels, Sodium use Sodium Channels               | 
              | Ion Cotransport use Ion Transport               | 
              | Ion Exchange               | 
              | Ion Exchange Resins               | 
              | Ion Exchange, Intracellular use Ion Transport               | 
              | Ion Pumps               | 
              | Ion Transfer use Ion Exchange               | 
              | Ion Transport               | 
              | Ion-Selective Electrodes               | 
              | Ionic Liquids               | 
              | Ionic Strength use Osmolar Concentration               | 
              | Ionomycin               | 
              | Ionophores               | 
              | Ionosphere               | 
              | Ionospheric Sounding               | 
              | Ions               | 
              | Ions, Heavy use Heavy Ions               | 
              | Iontophoresis               | 
              | Iopamidol               | 
              | Iopanoic Acid               | 
              | Iophendylate               | 
              | Iopodate use Ipodate               | 
              | Iostephane use Asteraceae               | 
              | Iotalamate Meglumine use Iothalamate Meglumine               | 
              | Iotalamic Acid use Iothalamic Acid               | 
              | Iothalamate Meglumine               | 
              | Iothalamic Acid               | 
              | Iothalamic Acid Methylglucamine use Iothalamate Meglumine               | 
              | Iowa               | 
              | Ioxaglate use Ioxaglic Acid               | 
              | Ioxaglate Meglumine use Ioxaglic Acid               | 
              | Ioxaglate Sodium use Ioxaglic Acid               | 
              | Ioxaglic Acid               | 
              | IPA (Independent Practice Association) use Independent Practice Associations               | 
              | Ipecac               | 
              | Ipecacuanha               | 
              | Ipecine use Emetine               | 
              | IPNV use Infectious pancreatic necrosis virus               | 
              | Ipodate               | 
              | Ipomoea               | 
              | Ipomoea batatas               | 
              | Ipomoea nil               | 
              | Ipomoea purga use Jalapa               | 
              | Ipomoea purpurea               | 
              | Ipomovirus use Potyviridae               | 
              | IPPB use Intermittent Positive-Pressure Breathing               | 
              | IPPV use Intermittent Positive-Pressure Ventilation               | 
              | Ipratropium               | 
              | Iprindole               | 
              | Iproniazid               | 
              | Ipronidazole               | 
              | Iproveratril use Verapamil               | 
              | IPSID use Immunoproliferative Small Intestinal Disease               | 
              | Ir Genes use Genes, MHC Class II               | 
              | Iran               | 
              | Iraq               | 
              | Iraq War, 2003 -               | 
              | Ireland               | 
              | Ireland, Republic of use Ireland               | 
              | IRF-1 Transcription Factor use Interferon Regulatory Factor-1               | 
              | IRF-2 Transcription Factor use Interferon Regulatory Factor-2               | 
              | IRF-3 Transcription Factor use Interferon Regulatory Factor-3               | 
              | IRF-7 Transcription Factor use Interferon Regulatory Factor-7               | 
              | Irian Jaya use Indonesia               | 
              | Iridaceae               | 
              | Iridectomy               | 
              | Iridium               | 
              | Iridium Metallicum               | 
              | Iridium Muriaticum               | 
              | Iridium Radioisotopes               | 
              | Iridocyclitis               | 
              | Iridoids               | 
              | Iridology               | 
              | Iridoviridae               | 
              | Iridovirus               | 
              | Iris               | 
              | Iris Diseases               | 
              | Iris factissima               | 
              | Iris florentina               | 
              | Iris foetidissima               | 
              | Iris germanica               | 
              | Iris Neoplasms               | 
              | Iris Plant               | 
              | Iris pseudacorus               | 
              | Iris tenax               | 
              | Iris versicolor               | 
              | Irish Free State use Ireland               | 
              | Iritis               | 
              | Iron               | 
              | Iron Bacteria               | 
              | Iron Carbonyl Compounds               | 
              | Iron Chelates use Iron Chelating Agents               | 
              | Iron Chelating Agents               | 
              | Iron Compounds               | 
              | Iron Deficiency               | 
              | Iron Isotopes               | 
              | Iron Metabolism Disorders               | 
              | Iron Overload               | 
              | Iron Pipes               | 
              | Iron Proteins, Non-Heme use Nonheme Iron Proteins               | 
              | Iron Radioisotopes               | 
              | Iron Regulatory Factor use Iron-Regulatory Proteins               | 
              | Iron Regulatory Protein 1               | 
              | Iron Regulatory Protein 2               | 
              | Iron Salts               | 
              | Iron, Dietary               | 
              | Iron-Binding Proteins               | 
              | Iron-Deficiency Anemia use Anemia, Iron-Deficiency               | 
              | Iron-Dextran Complex               | 
              | Iron-Regulatory Proteins               | 
              | Iron-Sulfur Protein Reductase use Ferredoxin-NADP Reductase               | 
              | Iron-Sulfur Proteins               | 
              | Ironwort use Sideritis               | 
              | Irradiation, Half-Body use Hemibody Irradiation               | 
              | Irradiation, Hemibody use Hemibody Irradiation               | 
              | Irrawaddy River Dolphin use Dolphins               | 
              | Irrigation               | 
              | Irrigation (Agriculture)               | 
              | Irrigation Channels               | 
              | Irrigation Water use Irrigation (Agriculture)               | 
              | Irrigation, Gastric use Gastric Lavage               | 
              | Irrigation, Peritoneal use Peritoneal Lavage               | 
              | Irritable Bowel Syndrome               | 
              | Irritable Mood               | 
              | Irritant Dermatitis use Dermatitis, Irritant               | 
              | Irritants               | 
              | Irritating Gases               | 
              | IS Elements use DNA Transposable Elements               | 
              | Isaacs Syndrome               | 
              | Isatin               | 
              | Isatis               | 
              | Isavirus               | 
              | Ischemia               | 
              | Ischemia, Myocardial use Myocardial Ischemia               | 
              | Ischemia-Anoxia, Brain use Hypoxia-Ischemia, Brain               | 
              | Ischemia-Anoxia, Cerebral use Hypoxia-Ischemia, Brain               | 
              | Ischemia-Hypoxia, Brain use Hypoxia-Ischemia, Brain               | 
              | Ischemia-Hypoxia, Cerebral use Hypoxia-Ischemia, Brain               | 
              | Ischemia-Reperfusion Injury use Reperfusion Injury               | 
              | Ischemic Attack, Transient               | 
              | Ischemic Colitis use Colitis, Ischemic               | 
              | Ischemic Contracture               | 
              | Ischemic Encephalopathy use Brain Ischemia               | 
              | Ischemic Heart Disease use Myocardial Ischemia               | 
              | Ischemic Optic Neuropathy use Optic Neuropathy, Ischemic               | 
              | Ischemic Preconditioning               | 
              | Ischemic Preconditioning, Myocardial               | 
              | Ischemic-Hypoxic Encephalopathy use Hypoxia-Ischemia, Brain               | 
              | Ischium               | 
              | Ischnocera use Mallophaga               | 
              | ISCOMs               | 
              | Isertia use Rubiaceae               | 
              | Isethionic Acid               | 
              | ISGF3 Transcription Factor use Interferon-Stimulated Gene Factor 3               | 
              | Islam               | 
              | Island Flaps use Surgical Flaps               | 
              | Islands of Calleja               | 
              | Islands of Langerhans use Islets of Langerhans               | 
              | Isle of Man use Great Britain               | 
              | Islet Cell Tumor use Adenoma, Islet Cell               | 
              | Islet Cell Tumor, Malignant use Carcinoma, Islet Cell               | 
              | Islet Cell Tumor, Ulcerogenic use Gastrinoma               | 
              | Islet Cells use Islets of Langerhans               | 
              | Islet-Activating Protein use Pertussis Toxin               | 
              | Islets of Langerhans               | 
              | Islets of Langerhans Transplantation               | 
              | ISO 14000               | 
              | ISO 9000               | 
              | Iso-OMPA use Tetraisopropylpyrophosphamide               | 
              | Isoamylase               | 
              | Isoantibodies               | 
              | Isoantigens               | 
              | Isoaspartic Acid               | 
              | Isobamate use Carisoprodol               | 
              | Isobar               | 
              | Isobutanes use Butanes               | 
              | Isobutrazine use Trimeprazine               | 
              | Isobutylcyanoacrylate use Bucrylate               | 
              | Isobutyltheophylline use 1-Methyl-3-isobutylxanthine               | 
              | Isocarboxazid               | 
              | Isochores               | 
              | Isochromosomes               | 
              | Isocitrase use Isocitrate Lyase               | 
              | Isocitratase use Isocitrate Lyase               | 
              | Isocitrate Dehydrogenase               | 
              | Isocitrate Hydro-Lyase use Aconitate Hydratase               | 
              | Isocitrate Lyase               | 
              | Isocitrates               | 
              | Isocoumarins               | 
              | Isocyanates               | 
              | Isocyanides use Cyanides               | 
              | Isodesmosine               | 
              | Isodon               | 
              | Isoelectric Focusing               | 
              | Isoelectric Focusing Agents use Ampholyte Mixtures               | 
              | Isoelectric Point               | 
              | Isoenzymes               | 
              | Isoephedrine use Pseudoephedrine               | 
              | Isoetharine               | 
              | Isoetretin use Acitretin               | 
              | Isoflavones               | 
              | Isoflurane               | 
              | Isoflurophate               | 
              | Isoforms use Protein Isoforms               | 
              | Isofosfamide use Ifosfamide               | 
              | Isograft use Transplantation, Isogeneic               | 
              | Isogram               | 
              | Isohemagglutinins use Hemagglutinins               | 
              | Isoheptanes use Heptanes               | 
              | Isohexanes use Hexanes               | 
              | Isohyet               | 
              | Isoimmunization, Rhesus use Rh Isoimmunization               | 
              | Isoindoles               | 
              | Isolated Population use Suburban Population               | 
              | Isolation, Patient use Patient Isolation               | 
              | Isolation, Social use Social Isolation               | 
              | Isolectins use Lectins               | 
              | Isoleucine               | 
              | Isoleucine-Specific tRNA use RNA, Transfer, Ile               | 
              | Isoleucine-tRNA Ligase               | 
              | Isoleucyl T RNA Synthetase use Isoleucine-tRNA Ligase               | 
              | Isomaltase use Oligo-1,6-Glucosidase               | 
              | Isomaltose               | 
              | Isomeprobamate use Carisoprodol               | 
              | Isomerases               | 
              | Isomerases, cis-trans use cis-trans-Isomerases               | 
              | Isomerism               | 
              | Isometric Contraction               | 
              | Isometric Exercise use Exercise               | 
              | Isoniazid               | 
              | Isonicotinic Acid Hydrazide use Isoniazid               | 
              | Isonicotinic Acids               | 
              | Isonipecain use Meperidine               | 
              | Isonipecotic Acids               | 
              | Isonymy use Names               | 
              | Isooctanes use Octanes               | 
              | Isopathy use Isotherapy               | 
              | Isopentanes use Pentanes               | 
              | Isopentenyladenosine               | 
              | Isophenylephrine use Metaraminol               | 
              | Isophosphamide use Ifosfamide               | 
              | Isopoda               | 
              | Isopregnenone use Dydrogesterone               | 
              | Isoprenaline use Isoproterenol               | 
              | Isoprenoid Phosphate Monosaccharides use Polyisoprenyl Phosphate Monosaccharides               | 
              | Isoprenoid Phosphate Oligosaccharides use Polyisoprenyl Phosphate Oligosaccharides               | 
              | Isoprenoid Phosphate Sugars use Polyisoprenyl Phosphate Sugars               | 
              | Isoprenoid Phosphates use Polyisoprenyl Phosphates               | 
              | Isoprenylation use Prenylation               | 
              | Isopromedol use Promedol               | 
              | Isopropanol use 2-Propanol               | 
              | Isopropyl Alcohol use 2-Propanol               | 
              | Isopropyl Thiogalactoside               | 
              | Isopropylarterenol use Isoproterenol               | 
              | Isopropylmeprobamate use Carisoprodol               | 
              | Isopropylphenyladenosine use Phenylisopropyladenosine               | 
              | Isoprostanes               | 
              | Isoproterenol               | 
              | Isoptera               | 
              | Isopyrum use Ranunculaceae               | 
              | Isoquinolines               | 
              | Isoseismal               | 
              | Isosorbide               | 
              | Isosorbide Dinitrate               | 
              | Isospora               | 
              | Isosporiasis               | 
              | Isotach               | 
              | Isotachophoresis use Electrophoresis               | 
              | Isotherapy               | 
              | Isotherm               | 
              | Isothiocyanates               | 
              | Isothiuronium               | 
              | Isotonic Contraction               | 
              | Isotonic Drinks use Foods for Persons Engaged in Physical Activities               | 
              | Isotonic Solutions               | 
              | Isotope Labeling               | 
              | Isotopes               | 
              | Isotretinoin               | 
              | Isotype Switching use Immunoglobulin Class Switching               | 
              | Isovaleryl-CoA Dehydrogenase               | 
              | Isoxazoles               | 
              | Isoxsuprine               | 
              | Isozymes use Isoenzymes               | 
              | Ispaghula use Psyllium               | 
              | Isradipine               | 
              | Israel               | 
              | ISS Score use Injury Severity Score               | 
              | Itai-Itai use Cadmium Poisoning               | 
              | Italian Millet use Setaria Plant               | 
              | Italy               | 
              | Itching use Pruritus               | 
              | Itcz use Intertropical Convergence Zone               | 
              | Iteravirus use Densovirinae               | 
              | Ithyphallus impudicus use Phallus impudicus               | 
              | Ito Syndrome use Pigmentation Disorders               | 
              | ITP use Inosine Triphosphate               | 
              | Itraconazole               | 
              | Itu               | 
              | IUdR use Idoxuridine               | 
              | IUGR use Fetal Growth Retardation               | 
              | Ivermectin               | 
              | IVIG use Immunoglobulins, Intravenous               | 
              | Ivory Coast use Cote d'Ivoire               | 
              | Ivy Gourd use Cucurbitaceae               | 
              | Ivy Method use Bleeding Time               | 
              | Ivy, English use Hedera               | 
              | Ivy, Poison use Toxicodendron               | 
              | IWMR use Integrated Water Resource Management               | 
              | Ixodes               | 
              | Ixodes dammini use Ixodes               | 
              | Ixodes persulcatus use Ixodes               | 
              | Ixodes ricinus use Ixodes               | 
              | Ixodes scapularis use Ixodes               | 
              | Ixodida use Ticks               | 
              | Ixodidae               |