| MOS | medial orbital sulcus; Medical Outcomes Study; microsomal ethanol-oxidizing system; Moloney murine s... |
|---|---|
| MPSV | myeloproliferative sarcoma virus |
| OS | left eye [Lat. oculus sinister]; occipitosacral; occupational safety; office surgery; Omenn syndrome... |
| PR-RSV | Prague Rous sarcoma virus |
| RCS | rabbit aorta-contracting substance; red cell suspension; reticulum cell sarcoma; right coronary sinu... |