| UMPS | uridine monophosphate synthase |
|---|---|
| UP | parallax unsharpness; ulcerative proctitis; ultrahigh purity; unipolar; upright posture; ureteropelv... |
| UPase | uridine phosphorylase |
| UR | unconditioned reflex; upper respiratory; uridine; urinal; urology; utilization review |
| Urd | uridine |