| RSA | rabbit serum albumin; regular spiking activity; relative specific activity; relative standard accura... |
|---|---|
| RSB | reticulocyte standard buffer; right sternal border |
| RSD | reflex sympathetic dystrophy; relative standard deviation |
| RSMR | relative standard mortality rate |
| Rst | in paper or thin layer chromatography, the distance that a spot of a substance has moved, relative t... |