| rev | reverse; review; revolution |
|---|---|
| ROS | reactive oxygen species; review of systems; rod outer segment |
| ROSS | review of subjective symptoms |
| RRC | residency review committee; risk reduction component; routine respiratory care; Royal Red Cross; rur... |
| RS | radioscaphoid; random sample; rating schedule; Raynaud syndrome; recipient's serum; rectal sinus; re... |
| OIE | Office International des Epizooties |
|---|---|
| SLICC/ACR | Systemic Lupus International Collaborating Clinics/American College of Rheumatology |
| UICC | Union International Contre le Cancer |