| MAR | main admissions room; marasmus; marrow; maximal aggregation ratio; medication administration record;... |
|---|---|
| MBLA | methylbenzyl linoleic acid; mouse-specific bone-marrow-derived lymphocyte antigen |
| MIT | Massachusetts Institute of Technology; male impotence test; marrow iron turnover; melodic intonation... |
| MMNC | marrow mononuclear cell |
| MNR | marrow neutrophil reserve |