| SPPS | solid phase peptide synthesis; stable plasma protein solution |
|---|---|
| SPR | sepiapterin reductase; serial probe recognition; specific pathogen free; Society for Pediatric Radio... |
| SPRIA | solid phase radioimmunoassay |
| TE | exhalation time; expiratory phase time |
| tG1 | the time required to complete the G1 phase of the cell cycle |