fluorescent

fluorescent

[floo͡res′ent]

pertaining to or characterized by fluorescence.

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fluorescent [floo͡-res´ent]

pertaining to or characterized by fluorescence.

fluorescent antibody test a test for the distribution of cells expressing a specific protein by binding antibody specific for the protein and detecting complexes by fluorescent labeling of the antibody. Called also FAB test.

fluorescent treponemal antibody absorption test the standard treponemal antigen test for syphilis: Nonspecific antibodies are removed from patient serum, which is then reacted with Treponema pallidum fixed to a glass slide. Specific antibodies adhering to the treponemes are demonstrated with fluorescein-labeled antihuman globulin. Positive tests are seen in about 85 per cent of cases of primary syphilis, 100 per cent in secondary syphilis, and 98 per cent in late syphilis. The test remains positive for life even after syphilis has been successfully treated. Called also FTA-ABS test.

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fluorescent

having the quality of fluorescence.

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fluorescent antibody

see fluorescence microscopy.

fluorescent antibody test

see fluorescence microscopy.

fluorescent bone marker

tetracycline is used experimentally to mark bone for procedures such as measuring rate of growth of bone.

fluorescent crystals

phosphors used in radiographic intensifying screens. A fine grade of crystals improves the definition of the image obtained but significantly slows the speed of the film. Calcium tungstate was commonly used as the phosphor but is gradually being replaced by rare earths.

fluorescent dye

used in fluorescent staining and fluorescence microscopy.

fluorescent screen

used as a fluoroscopic screen.

fluorescent staining

use of a fluorescent dye linked to an antibody forms the basis for fluorescence microscopy.