| RU | radioulnar; rat unit; reading unit; residual urine; resin uptake; resistance unit; retrograde urogra... |
|---|---|
| SU | salicyluric acid; secretory unit; sensation unit; solar urticaria; sorbent unit; spectrophotometric ... |
| ISA | Instrument Society of America; intracarotid sodium amytal; intrinsic simulating activity; intrinsic ... |
| ACU | acquired cold urticaria; acute care unit; agar colony-forming unit; ambulatory care unit |
| BU | base of prism up; Bethesda unit; blood urea; Bodansky unit; bromouracil; burn unit |