| Lp | lipoprotein; sound pressure level |
|---|---|
| L1TC | level 1 trauma center |
| MBL | Marine Biological Laboratory; menstrual blood loss; minimum bactericidal level |
| MEL | metabolic equivalent level; mouse erythroleukemia |
| MPL | maximum permissible level; melphalan; mesiopulpolingual; myeloproliferative leukemia |