| PTN | pain transmission neuron; pleiotrophin; posterior tibial nerve |
|---|---|
| RAP | recurrent abdominal pain; regression-associated protein; renal artery pressure; resident assessment ... |
| RP | radial pulse; radiopharmaceutical; rapid processing [of film]; Raynaud phenomenon; reactive protein;... |
| RPMD | rheumatic pain modulation disorder |
| SMP | slow moving protease; standard medical practice; submitochondrial particle; sulfamethoxypyrazine; sy... |