| ff+ | fertility inhibition positive |
|---|---|
| ff- | fertility inhibition negative |
| FRF | Fertility Research Foundation; follicle-stimulating hormone-releasing factor |
| IBIDS | ichthyosis-brittle hair-impaired intelligence-decreased fertility-short stature [syndrome] |
| IFA | idiopathic fibrosing alveolitis; immunofluorescence assay; immunofluorescent antibody; incomplete Fr... |