| MC | mass casualties; mast cell; Master of Surgery [Lat. Magister Chirurgiae]; maximum concentration; Med... |
|---|---|
| MCR | Medical Corps Reserve; melanocortin receptor; message competition ratio; metabolic clearance rate; m... |
| MORC | Medical Officers Reserve Corps |
| MRC | maximum recycling capacity; Medical Registration Council; Medical Research Council; Medical Reserve ... |
| NHSC | National Health Service Corps |