| Abbreviation | Definition |
|---|---|
| MT | Medical Team |
| MT(CFSAN) | Medical Team (CFSAN) |
| MTA | Mail Ttransport Agent |
| MTA | Material Transfer Agreement |
| MTCT | Mother-to-child transmission |
| MTD | Maximum Tolerated Dose |
| MTOS | Muirkirk Technical Operations Staff (Laurel, Maryland) |
| MTOS(CFSAN) | Muirkirk Technical Operations Staff (CFSAN) |
| MUMS | Minor Use and Minor Species Animal Health Act of 2004 |
| MUMS | Minor Use Minor Species |
| MUMS(CVM) | Office of Minor Use and Minor Species (CVM) |
| MUMSAct | Minor Use and Minor Species Animal Health Act of 2004 |
| MVB | Molecular Virology Branch |
| MVB(CFSAN) | Molecular Virology Branch (CFSAN) |
| MVT | Molecular Virology Team |
| MVT(CFSAN) | Molecular Virology Team (CFSAN) |
| MWG | Milk Working Group |
| n.b. | nota bene (note well) |
| N/A | Not Applicable |
| NA | Not Approvable |