| LC50 | median lethal concentration |
|---|---|
| LCSS | lethal congenital contracture syndrome |
| LD | labor and delivery; laboratory data; labyrinthine defect; lactate dehydrogenase; laser Doppler; lear... |
| LD50 | median lethal dose |
| LD50/30 | a dose that is lethal for 50% of test subjects within 30 days |