| APF | acidulated phosphofluoride; American Psychological Foundation; anabolism-promoting factor; animal pr... |
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| EPF | early pregnancy factor; endocarditis parietalis fibroplastica; endothelial proliferating factor; est... |
| HF | Hageman factor; haplotype frequency; hard filled [capsule]; hay fever; head of fetus; head forward; ... |
| IF | idiopathic fibroplasia; idiopathic flushing; immersion foot; immunofluorescence; indirect fluorescen... |
| KAF | conglutinogen-activating factor; killer-assisting factor; kinase activating factor |
D factor
| fluorescent antibody | Immunoglobulin molecule which as been coupled with a fluorescent molecule so that it exhibits fluorescence. (09 Oct 1997) |
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| fluorescent antibody technique | Test for tissue antigen using either a direct method, by conjugation of antibody with fluorescent dye (fluorescent antibody technique, direct) or an indirect method, by formation of antigen-antibody complex which is then labelled with fluorescein-conjugated anti-immunoglobulin antibody (fluorescent antibody technique, indirect). The tissue is then examined by fluorescence microscopy. (12 Dec 1998) |
| fluorescent antibody technique, direct | A form of fluorescent antibody technique utilizing a fluorochrome conjugated to an antibody, which is added directly to a tissue or cell suspension for the detection of a specific antigen. (12 Dec 1998) |
| fluorescent antibody technique, indirect | A form of fluorescent antibody technique commonly used to detect serum antibodies and immune complexes in tissues and microorganisms in specimens from patients with infectious diseases. The technique involves formation of an antigen-antibody complex which is labelled with fluorescein-conjugated anti-immunoglobulin antibody. (12 Dec 1998) |
| fluorescent antibody techniques | Lab techniques for locating antigens in a prepared tissue sample by using antibodies with fluorescent labels which will bind to the antigens of interest. (09 Oct 1997) |
| fluorescent antibody titre | An indirect method of measuring the concentration of an antibody in serum through the detection of fluorescent light emitted in a chemical reaction. (27 Sep 1997) |
| fluorescent antinuclear antibody test | FANA test, a test for antinuclear antibody components; used, in particular, for the diagnosis of collagen-vascular diseases. (05 Mar 2000) |
| fluorescent treponemal antibody-absorption test | <investigation> A sensitive and specific serologic test for syphilis. It is more specific than the VDRL assay. The patient's serum is diluted to remove non-specific antibodies and then mixed on a glass slide with Nichol's strain of Treponema pallidum. If antibodies are present in the patient's serum they bind to the antigen and the bound antibodies are detected with fluoresceinated antihuman gamma-globulin antibody. Synonym: FTA-ABS test. (12 Sep2002) |
| Forssman antibody | A heterogenetic antibody specific for the Forssman group of heterogenetic antigens. Synonym: heterophil antibody, heterophile antibody. (05 Mar 2000) |
| Forssman antigen-antibody reaction | The combination of Forssman antibody with heterogenetic antigen of the Forssman type, as in the agglutination of sheep erythrocytes (which contain Forssman antigen) by serum from a person with infectious mononucleosis which contains Forssman antibody. Synonym: Forssman reaction. (05 Mar 2000) |
| 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) |
| accelerator factor | <chemical> Heat- and storage-labile plasma glycoprotein which accelerates the conversion of prothrombin to thrombin in blood coagulation. Factor v accomplishes this by forming a complex with factor xa, phospholipid, and calcium (prothrombinase complex). Deficiency of factor v leads to owren's disease. Chemical name: Blood-coagulation factor V (12 Dec 1998) |
| acetate replacement factor | <biochemistry> 1,2 dithiolane 3 valeric acid. Regarded as a coenzyme in the oxoglutarate dehydrogenase complex of the citric acid cycle. Involved generally in oxidative decarboxylations of _ keto acids. A growth factor for some organisms. (18 Nov 1997) |
| adrenal weight factor | A postulated substance of adenohypophysial origin responsible for maintenance of the weight of the adrenal cortex. (05 Mar 2000) |
| adrenocorticotropic releasing factor | Hormone produced by hypothalamus that causes pituitary to secrete adrenocorticotropic hormone. (05 Mar 2000) |