| UCP | uncoupling protein; urinary coproporphyrin; urinary C-peptide |
|---|---|
| UTI | urinary tract infection; urinary trypsin inhibitor |
| fd | fundus |
| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
| FFM | fat-free mass; fundus flavimaculatus |