| ROH | rat ovarian hyperemia [test] |
|---|---|
| RSC | rat spleen cell; rested state contraction; reversible sickle-cell; right subclavian |
| RSS | rat stomach strip; rectosigmoidoscopy; Russell-Silver syndrome |
| RU | radioulnar; rat unit; reading unit; residual urine; resin uptake; resistance unit; retrograde urogra... |
| RV | random variable; rat virus; Rauscher virus; rectovaginal; reinforcement value; renal vein; residual ... |