| SBF | serologic-blocking factor; specific blocking factor; splanchnic blood flow |
|---|---|
| SDF | slow death factor; stress distribution factor |
| SGF | sarcoma growth factor; skeletal growth factor |
| SMAF | smooth muscle activating factor; specific macrophage arming factor |
| SRF | severe renal failure; skin reactive factor; somatotropin-releasing factor; split renal function; sub... |