| PRF | partial reinforcement; patient report form; perforin; plasma recognition factor; pontine reticular f... |
|---|---|
| PTRA | percutaneous transluminal renal angioplasty |
| RA | radioactive; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal... |
| RALPH | renal-anal-lung-polydactylyhamartoblastoma [syndrome] |
| RAP | recurrent abdominal pain; regression-associated protein; renal artery pressure; resident assessment ... |