| L/D | light/darkness [ratio] |
|---|---|
| LDD | late dedifferentiation; light-darkness discrimination |
| LED | light-emitting diode; lowest emitting dose; lupus erythematosus disseminatus |
| LEM | lateral eye movement; Leibovitz-Emory medium; leukocyte endogenous mediator; light emission microsco... |
| LHC | Langerhans cell histiocytosis; left heart catheterization; left hypochondrium; light-harvesting comp... |