| FIA | fistula in ano; fluorescent immunoassay; focal immunoassay; Freund incomplete adjuvant |
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| fl | femtoliter; filtered load; flexion, flexible; fluorescent; flow; fluid; flutter; foot lambert |
| fluor | fluorescence; fluorescent; fluorometry; fluoroscopy |
| RFFIT | rapid fluorescent focus inhibition test |
| ADCC cell | Antibody Dependent Cellular(= Cell-Mediated) Cytotoxicity cell |
| lyme disease antibody | A blood test which measures for the presence of Lyme disease antibodies. A nonreactive or serum titre of less than 1:256 is normal. A rising titre over time is more diagnostic. False positives due occur in those with rheumatoid arthritis and lupus. (27 Sep 1997) |
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