| RS | radioscaphoid; random sample; rating schedule; Raynaud syndrome; recipient's serum; rectal sinus; re... |
|---|---|
| SE | saline enema; sanitary engineering; side effect; smoke exposure; solid extract; sphenoethmoidal; spi... |
| SEQ | side effects questionnaire |
| SR | sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentat... |
| SRU | sample ratio units; side rails up; solitary rectal ulcer; structural repeating unit |