| LC50 | median lethal concentration |
|---|---|
| LCSS | lethal congenital contracture syndrome |
| LEP | lethal effective phase; lipoprotein electrophoresis; low egg passage; lower esophagus |
| LF | labile factor; lactoferrin; laryngofissure; Lassa fever; latex fixation; left foot; left forearm; le... |
| LGVHD | lethal graft-versus-host disease |