| RF | radial fiber; radio frequency; receptive field; regurgitant fraction; Reitland-Franklin [unit]; rela... |
|---|---|
| RR | radiation reaction; radiation response; rate ratio; rational recovery [group]; recovery room; relati... |
| RSA | rabbit serum albumin; regular spiking activity; relative specific activity; relative standard accura... |
| CEA | Carcino-Embryonic Antigen [HP 1825-6] ; Oncofetal Antigens ; Glycopro... |
| AIMS | abnormal involuntary movement scale; aid for the impaired medical student; arthritis impact measurem... |