| fluoro- | See: fluor-. (05 Mar 2000) |
|---|---|
| fluoro-2,4-dinitrobenzene | A reagent used to combine with the free NH2 group of the NH2-terminal amino acid residue in a peptide, thus marking this residue; the combined forms are known as DNP-proteins, Dnp-aminoacyl, etc., the fluorine having been replaced to leave a dinitrophenyl residue (DNP, Dnp, or N2Ph-) attached to the NH2 group. Synonym: Sanger's reagent. Acronym: FDNB (05 Mar 2000) |
| fluoroacetate-specific dehalogenase | <enzyme> Acts on fluoroacetamide at 0.1 the rate for fluoroacetate Registry number: EC 3.8.1.- Synonym: fluoroacetate-specific defluorinase, fac dehalogenase (26 Jun 1999) |
| fluorocarbons | Liquid perfluorinated carbon compounds which may or may not contain a hetero atom such as nitrogen, oxygen or sulfur, but do not contain another halogen or hydrogen atom. This concept includes fluorocarbon emulsions and fluorocarbon blood substitutes. (12 Dec 1998) |
| fluorochrome | 1. <chemistry> Those molecules that are fluorescent when appropriately excited, fluorochromes such as fluorescein or tetramethyl rhodamine are usually used in their isothiocyanate forms (FITC, TRITC). 2. <microscopy> Dyes which have little colouring effect under ordinary lighting conditions but which fluoresce when irradiated with ultraviolet radiation. (05 Aug 1998) |
| fluorochroming | 1. Tagging or "labeling" of antibody with a fluorescent dye so that it may be observed with a microscope (using ultraviolet light), as a means of studying the origin, distribution, and sites of reaction (with antigen) in tissues. 2. Microscopic detection of cellular and tissue chemical components (DNA, RNA, proteins, polysaccharides) with the aid of fluorochromes bound to these components. (05 Mar 2000) |
| fluorocyte | Term used occasionally for a reticulocyte that exhibits fluorescence. (05 Mar 2000) |
| fluorodeoxyuridylate | <chemical> 5-fluoro-2'-deoxyuridylate. An inhibitor of thymidylate synthetase. Formed from 5-fluorouracil or 5-fluorodeoxyuridine. Chemical name: 5'-Uridylic acid, 2'-deoxy-5-fluoro- (12 Dec 1998) |
| fluorodifen | <chemical> An agricultural herbicide which is a yellow, crystalline solid that melts at 92 degrees C. (09 Oct 1997) |
| fluorography | The photography of images produced on a fluorescent screen by X-rays. (12 Dec 1998) |
| fluoroid | <chemistry> A tetrahexahedron; so called because it is a common form of fluorite. Origin: Fluor. Source: Websters Dictionary (01 Mar 1998) |
| fluoroimmunoassay | The use of fluorescence spectrometry to obtain quantitative results for the fluorescent antibody technique. One advantage over the other methods (e.g., radioimmunoassay) is its extreme sensitivity, with a detection limit on the order of tenths of microgram/liter. (12 Dec 1998) |
| fluorometer | <apparatus> A device used to measure the amount of fluorescence released by a sample that is exposed to a single wavelength of light or other electromagnetic radiation. (09 Oct 1997) |
| fluorometholone | <chemical> A glucocorticoid employed, usually as eye drops, in the treatment of allergic and inflammatory conditions of the eye. It has also been used topically in the treatment of various skin disorders. Pharmacological action: anti-allergic agents, steroidal anti-inflammatory agents, glucocorticoids, synthetic, glucocorticoids, topical. Chemical name: Pregna-1,4-diene-3,20-dione, 9-fluoro-11,17-dihydroxy-6-methyl-, (6alpha,11beta)- (12 Dec 1998) |
| fluorometry | An analytic method for determining fluorescent compounds, using a beam of ultraviolet light that excites the compounds and causes them to emit visible light. Origin: fluoro-+ G. Metron, measure (05 Mar 2000) |