| MRBF | mean renal blood flow |
|---|---|
| MRD | maximum rate of depolarization; measles-rindenpest-distemper [virus group]; medical records departme... |
| MRF | Markov random field; medical record file; melanocyte-[stimulating hormone]-releasing factor; mesence... |
| MRI | machine-readable identifier; magnetic resonance imaging; medical records information; Medical Resear... |
| MRN | malignant renal neoplasm |