| MRA | magnetic resonance angiography; main renal artery; marrow repopulation activity; medical record analysis or analyst; medical records administrator; multivariate regression analysis |
|---|---|
| MRAB | machine-readable archives in biomedicine |
| mrad | millirad |
| MRAP | alpha-2-macroglobulin; maximal resting anal pressure; mean right atrial pressure |
| MRAS | main renal artery stenosis |