| S | Greek capital letter sigma; syphilis; summation of series |
|---|---|
| SS | disulfide; sacrosciatic; saline soak; saline solution; saliva sample; saliva substitute; Salmonella-... |
| UGIS | upper gastrointestinal series |
| GM-CSF | Granulocyte-Macrophage Colony Stimulating Factor |
| rGM-CSF | recombinant Granulocyte-Macrophage Colony Stimulating Factor |