| 6-MAM | monoacetyl-morphine |
|---|---|
| MBG | Marburg [disease]; mean blood glucose; morphine-benzedrine group [scale] |
| M&C | morphine and cocaine |
| M3G | morphine-3-glucuronide |
| MLC | minimum lethal concentration; mixed leukocyte culture; mixed ligand chelate; mixed lymphocyte concen... |