| MLR | mean length response; middle latency response; mixed lymphocyte reaction |
|---|---|
| MLU | mean length of utterance |
| PCL | pacing cycle length; persistent corpus luteum; plasma cell leukemia; posterior chamber lens; posteri... |
| PLL | peripheral light loss; phase-locked loop; poly-L-lysine; pressure length loop; posterior longitudina... |
| RELP | restriction fragment length polymorphism |