| pre-RC | pre-replication complex |
|---|---|
| pre-rRNA | pre-ribosomal RNA |
| pre-SMA | pre-supplementary motor area |
| Pred | 5--prednisolone |
| PRED | Prednisone |
| PREE | partial reinforcement extinction effect |
| PREG | Pregnenolone |
| PREG S | Pregnenolone sulfate |
| PREP | Pattern Reversal Evoked Potential |
| preproET-1 | Preproendothelin 1 |