| RIS | radiology information system; rapid immunofluorescence staining; resonance ionization spectroscopy |
|---|---|
| Ag | antigen; silver [Lat. argentum] |
| arg | arginine; silver [Lat. argentum] |
| GMS | General Medical Service; geriatric mental state; Gilbert-Meulengracht syndrome; Gomori methenamine s... |
| PASM | periodic acid-silver methenamine |