| PMM | pentamethylmelamine; protoplast maintenance medium |
|---|---|
| PRAS | pre-reduced anaerobically sterilized [medium]; pseudo-renal artery syndrome |
| RPMI | Roswell Park Memorial Institute [medium] |
| SA | salicylic acid; saline [solution]; salt added; sarcoidosis; sarcoma; scalenus anticus; secondary ame... |
| SCCM | Sertoli cell culture medium; Society of Critical Care Medicine |