| M3G | morphine-3-glucuronide |
|---|---|
| MLC | minimum lethal concentration; mixed leukocyte culture; mixed ligand chelate; mixed lymphocyte concen... |
| MLF | medial longitudinal fasciculus; morphine-like factor |
| Mor, mor | morphine |
| MS | Maffuci syndrome; maladjustment score; mandibular series; Marfan syndrome; Marie-Strumpell [syndrome... |