| M&R | measure and record |
|---|---|
| MRA | magnetic resonance angiography; main renal artery; marrow repopulation activity; medical record anal... |
| MRF | Markov random field; medical record file; melanocyte-[stimulating hormone]-releasing factor; mesence... |
| OMR | oligomycin-resistant; online medical record |
| PCR | patient contact record; phosphocreatinine; plasma clearance rate; polymerase chain reaction; post-co... |