| IR | drop of voltage across a resistor produced by a current; ileal resection; immune response; immunizat... |
|---|---|
| ER | efficiency ratio; epigastric region; ejection rate; electroresection; emergency room; endoplasmic re... |
| SR | sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentat... |
| SCM | Schwann cell membrane; sensation, circulation, and motion; Society of Computer Medicine; soluble cyt... |
| AERP | antegrade effective refractory period; atrial effective refractory period |