Each SUBSTANCE
| may be described in terms of one or more SUBSTANCE CHARACTERISTIC | |
| may be included in one or more SUBSTANCE IN MEDICAMENT | |
| may be identified by one or more SUBSTANCE NAME |
Classes
| may be described in terms of one or more SUBSTANCE CHARACTERISTIC | |
| may be included in one or more SUBSTANCE IN MEDICAMENT | |
| may be identified by one or more SUBSTANCE NAME |