| MEL | metabolic equivalent level; mouse erythroleukemia |
|---|---|
| MET | maximal exercise test; metabolic equivalent of the task; metastasis, metastatic; methionine; midexpi... |
| mrep | milliroentgen equivalent physical |
| NE | national emergency; necrotic enteritis; necrotizing enterocolitis; nephropathia epidemica; nerve end... |
| NED | no evidence of disease; no expiration date; normal equivalent deviation |