| PLM | percent labeled mitoses; periodic leg movement; plasma level monitoring; polarized light microscopy |
|---|---|
| RL | radial line; radiation laboratory; reduction level; renal dysplasia-limb defects [syndrome]; resisti... |
| RLS | recursive least square; restless leg syndrome; Ringer lactate solution; Roussy-Levy syndrome |
| SL | sarcolemma; sclerosing leukoencephalopathy; secondary leukemia; segment length; sensation level; sen... |
| SLB | short-leg brace |