| US EPA | Environmental Protection Agency |
|---|---|
| US EPA | United States Environmental Protection Agency |
| USAF | Air Force |
| USAF | United States Air Force |
| USDA | US Department of Agriculture |
| USDA | United States Department of Agriculture |
| USE | Ultrasonic examination |
| USE | Upstream Sequence Element |
| USF | Up-stream stimulatory factor |
| USF | upstream stimulating factor |