| MPC | marine protein concentrate; maximum permissible concentration; mean plasma concentration; meperidine... |
|---|---|
| MPCUR | maximum permissible concentration of unidentified radionucleotides |
| MPD | main pancreatic duct; maximum permissible dose; mean population doubling; membrane potential differe... |
| NEDEL | no epidemiologically detectable exposure level |
| REL | rate of energy loss; recommended exposure limit; resting expiratory level |