| FSF | fibrin stabilizing factor; front surface fluorescence |
|---|---|
| FTU | fluorescence thiourea |
| ICF | immunodeficiency-centromeric instability-facial anomalies [syndrome]; indirect centrifugal flotation... |
| IF | idiopathic fibroplasia; idiopathic flushing; immersion foot; immunofluorescence; indirect fluorescen... |
| IGFL | integral green fluorescence |