| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
|---|---|
| ppGpp | 3'-pyrophosphoryl-guanosine-5'-diphosphate |
| PPRP | polyadenosine diphosphate-ribose polymerase |
| UD | ulcerative dermatosis; ulnar deviation; undetermined; underdeveloped; unit dose; urethral dilatation... |
| UDKase | uridine diphosphate kinase |