| IRI | immunoreactive insulin; insulin resistance index |
|---|---|
| MDR | median duration of response; medical device reporting; minimum daily requirement; multidrug resistan... |
| MHR | major histocompatibility region; malignant hyperthermia resistance; maternal heart rate; maximal hea... |
| MR | Maddox rods; magnetic resistance; magnetic resonance; mandibular reflex; mannose-resistant; may repe... |
| MRP | mean resisting potential; medical reimbursement plan; multidrug resistance-associated protein |