D - Chemicals and Drugs
 | Deleted term |   | Concept absorbed by |  
 
  | 
D08 - Enzymes and Coenzymes
  D12 - Amino Acids, Peptides, and Proteins
  D23 - Biological Factors
  D27 - Chemical Actions and Uses 
       | 
  
E - Analytical, Diagnostic and Therapeutic Techniques and Equipment
 | Deleted term |   | Concept absorbed by |  
 
  | 
E01 - Diagnosis
  E05 - Investigative Techniques 
       | 
  
SP - Public Health
 | Deleted term |   | Concept absorbed by |  
 
  | 
SP4 - Environmental Health 
       | 
  
VS - Health Surveillance
 | Deleted term |   | Concept absorbed by |  
 
  | 
VS2 - Health Surveillance of Products
  VS3 - Health Surveillance of Health Services 
       |