| Biologically Active Substance | http://purl.bioontology.org/ontology/STY/T123 | Biologically Active Substance | |
| Hormone | http://purl.bioontology.org/ontology/STY/T125 | Hormone | |
| Enzyme | http://purl.bioontology.org/ontology/STY/T126 | Enzyme | |
| Vitamin | http://purl.bioontology.org/ontology/STY/T127 | Vitamin | |
| Immunologic Factor | http://purl.bioontology.org/ontology/STY/T129 | Immunologic Factor | |
| Indicator, Reagent, or Diagnostic Aid | http://purl.bioontology.org/ontology/STY/T130 | Indicator, Reagent, or Diagnostic Aid | |
| Hazardous or Poisonous Substance | http://purl.bioontology.org/ontology/STY/T131 | Hazardous or Poisonous Substance | |
| Substance | http://purl.bioontology.org/ontology/STY/T167 | Substance | |
| Food | http://purl.bioontology.org/ontology/STY/T168 | Food | |
| Functional Concept | http://purl.bioontology.org/ontology/STY/T169 | Functional Concept | |
| Intellectual Product | http://purl.bioontology.org/ontology/STY/T170 | Intellectual Product | |
| Language | http://purl.bioontology.org/ontology/STY/T171 | Language | |
| Sign or Symptom | http://purl.bioontology.org/ontology/STY/T184 | Sign or Symptom | |
| Classification | http://purl.bioontology.org/ontology/STY/T185 | Classification | |
| Anatomical Abnormality | http://purl.bioontology.org/ontology/STY/T190 | Anatomical Abnormality | |
| Neoplastic Process | http://purl.bioontology.org/ontology/STY/T191 | Neoplastic Process | |
| Receptor | http://purl.bioontology.org/ontology/STY/T192 | Receptor | |
| Archaeon | http://purl.bioontology.org/ontology/STY/T194 | Archaeon | |
| Antibiotic | http://purl.bioontology.org/ontology/STY/T195 | Antibiotic | |
| Element, Ion, or Isotope | http://purl.bioontology.org/ontology/STY/T196 | Element, Ion, or Isotope | |
| Inorganic Chemical | http://purl.bioontology.org/ontology/STY/T197 | Inorganic Chemical | |
| Clinical Drug | http://purl.bioontology.org/ontology/STY/T200 | Clinical Drug | |
| Clinical Attribute | http://purl.bioontology.org/ontology/STY/T201 | Clinical Attribute | |
| Drug Delivery Device | http://purl.bioontology.org/ontology/STY/T203 | Drug Delivery Device | |
| Eukaryote | http://purl.bioontology.org/ontology/STY/T204 | Eukaryote | |
