| SP | Substance P |
|---|---|
| SPS | Sleep Promoting Substance |
| SRS-A | Slow Reacting Substance of Anaphylaxis |
| ADS | acute death syndrome; acute diarrheal syndrome; Alcohol Dependence Scale; alternative delivery syste... |
| ALS | acute lateral sclerosis; advanced life support; afferent loop syndrome; amyotrophic lateral sclerosi... |