| ref | reference; reflex |
|---|---|
| RM | radical mastectomy; random migration; radon monitor; range of movement; red marrow; reference materi... |
| RNS | reference normal serum; repetitive nerve stimulation; ribonuclease |
| RPSP | reference preparation for serum proteins |
| Rst | in paper or thin layer chromatography, the distance that a spot of a substance has moved, relative t... |