| Mr | relative molecular mass |
|---|---|
| BM | Bachelor of Medicine; barium meal; basal medium; basal metabolism; basement membrane; basilar membra... |
| MMR | mass miniature radiography; masseter muscle rigidity; maternal mortality rate; measles-mumps-rubella... |
| HMW | High Molecular Weight |
| HMWM | High Molecular Weight Multimers |