| MRAP | alpha-2-macroglobulin; maximal resting anal pressure; mean right atrial pressure |
|---|---|
| MRBF | mean renal blood flow |
| MREI | mean rate ejection index |
| MRP | mean resisting potential; medical reimbursement plan; multidrug resistance-associated protein |
| MRVP | mean right ventricular pressure; methyl red, Voges-Proskauer [medium] |