| SPF | skin protection factor; specific-pathogen free; spectrophotofluorometer; S-phase fraction; split pro... |
|---|---|
| SPR | sepiapterin reductase; serial probe recognition; specific pathogen free; Society for Pediatric Radio... |
| KIU | kallikrein inactivation unit |
| TIP | thermal inactivation point; Toxicology Information Program; translation-inhibiting protein; tumor-in... |
| XIC | X-inactivation center |