| SIS | semantic indexing system; serotinin irritation syndrome; simian sarcoma; simulator-induced syndrome;... |
|---|---|
| SISV, SiSV | simian sarcoma virus |
| SIV | simian immunodeficiency virus; Sprague-Dawley-Ivanovas [rat] |
| SIVagm | simian immunodeficiency virus from African green monkeys |
| SIVMAC | simian immunodeficiency virus of macaques |