| RA | radioactive; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal... |
|---|---|
| AERPAP | antegrade effective refractory period accessory pathway |
| AVNFRP | atrioventricular node functional refractory period |
| AVRP | atrioventricular refractory period |
| ERP | early receptor potential; effective refractory period; elodoisin-related peptide; endoscopic retrogr... |