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Relationships between NDF-RT drug products and multiaxial class hierarchies
| Class type | No of NDF-RT classes | NDF-RT relationship |
| Chemical Structure | 8339 | has_Ingredient |
| Mechanism of Action | 346 | has_MoA |
| Physiologic Effect | 1758 | has_PE |
| Therapeutic Intent | 4188 | may_treat |
| Pharmacokinetics | 58 | has_PK |
