| PU | palindromic unit; passed urine; pepsin unit; peptic ulcer; pregnancy urine; 6-propyluracil; prostati... |
|---|---|
| PUD | peptic ulcer disease; pudendal |
| ROU | recurrent oral ulcer |
| RUD | recurrent ulcer of the duodenal bulb |
| SRU | sample ratio units; side rails up; solitary rectal ulcer; structural repeating unit |