| GIS | gas in stomach; gastrointestinal series; geographic information system; guaranteed income supplement... |
|---|---|
| HPS | Hantavirus pulmonary syndrome; hematoxylin, phloxin, and saffron; Hermansky-Pudlak syndrome; high-pr... |
| ISIS | image selected in vivo spectroscopy; imaging science and information system; information system-imag... |
| CuS | copper supplement |
| ECGS | endothelial cell growth supplement |