| fluoresce | 1. To produce or exhibit fluorescence. 2. 4-phenyl[furan[2H(3H)-1'-phthalane]-3,3'-dione;a reagent that reacts with amino acids to procude a fluorescing compound. (05 Mar 2000) |
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| fluorescein | <chemical> Fluorophore commonly used in microscopy. Fluorescein di acetate can be used as a vital stain or can be conjugated to proteins (particularly antibodies) using isothiocyanate. Excitation is at 365nm and the emitted light is green yellow (450-490nm). The emission spectrum is pH sensitive and fluorescein can therefore be used to measure pH in intracellular compartments. (18 Nov 1997) |
| fluorescein angiography | <procedure> The process of taking X-rays of blood vessels that have been injected with a special dye. The dye allows to person viewing the X-ray to see the blood vessels. (13 Nov 1997) |
| fluorescein eye examination | A special test that allows the examiner to detect cornea abrasions or corneal foreign bodies. An orange dye (fluorescein) is placed into the eye and the eye is illuminated with a cobalt blue light (black light). This serves to highlight any irregularities in the corneal surface. (27 Sep 1997) |
| fluorescein instillation test | A test for patency of the lacrimal system; fluorescein instilled in the conjunctival sac can be recovered from the inferior nasal meatus. Synonym: Jones' test. (05 Mar 2000) |
| fluorescein isothiocyanate | <chemical> A fluorescent chemical derived from fluorescein which is used to label proteins. (25 Jun 1999) |
| fluorescein sodium | A dye used for diagnosis of certain ocular diseases, differentiation or delineation of organ parts in surgery, and determination of circulation time. Synonym: resorcinolphthalein sodium, uranin. (05 Mar 2000) |
| fluorescein string test | A string test used to determine location of a bleeding intestinal lesion in which fluorescein is given intravenously to determine gastrointestinal haemorrhage; if the string fluoresces after removal, it has been contaminated by blood that has appeared since injection of the fluorescein; used to determine location of bleeding lesion. (05 Mar 2000) |
| fluorescein-5-isothiocyanate | <chemical> 3',6'-dihydroxy-5-isothiocyanatospiro(isobenzofuran-1(3h),9'-(9h)xanthen)-3-one. Fluorescent probe capable of being conjugated to tissue and proteins. It is used as a label in fluorescent antibody staining procedures as well as protein- and amino acid-binding techniques. Pharmacological action: fluorescent dyes. Chemical name: Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 3',6'-dihydroxy-5-isothiocyanato- (12 Dec 1998) |
| fluorescein-conjugated antibody | Refers to an antibody that has joined with a fluorescein molecule. (09 Oct 1997) |
| fluoresceins | <chemical> A family of spiro(isobenzofuran-1(3h),9'-(9h)xanthen)-3-one derivatives. These are used as dyes, as indicators for various metals, and as fluorescent labels in immunoassays. Pharmacological action: fluorescent dyes. (12 Dec 1998) |
| fluorescence | <chemistry, physics> The emission of one or more photons by a molecule or atom activated by the absorption of a quantum of electro magnetic radiation. Typically the emission, that is of longer wavelength than the excitatory radiation, occurs within 10exp 8 seconds: phosphorescence is a phenomenon with a longer or much longer delay in re radiation. Note that rays, X-rays, UV, visible light and IR radiations may all stimulate fluorescence. (25 Jun 1999) |
| fluorescence energy transfer | <technique> Transfer of energy from one fluorochrome to another. The emission wavelength of the fluorochrome excited by the incident light must approximately match the excitation wavelength of the second fluorochrome. If light at the second emission wavelength is detected, it implies that the two fluorochromes were physically within a few nanometres. Used as a technique to probe protein or cell interactions. (25 Jun 1999) |
| fluorescence immunoassay | <technique> A sensitive technique which uses fluorescein, a fluorescent molecule, to measure the antigen or antibody concentration in a solution. (09 Oct 1997) |
| fluorescence in situ hybridization | <molecular biology, technique> A type of in situ hybridization in which target sequences are stained with fluorescent dye so their location and size can be determined using fluorescence microscopy. This staining is sufficiently distinct that the hybridization signal can be seen both in metaphase spreads and in interphase nuclei. Acronym: FISH (25 Jun 1999) |
Synonyms : Alcon Brand of Fluorescein Sodium, Allergan Brand of Fluorescein Sodium, C.I. 45350, Cahill May Roberts Brand of Fluorescein Sodium, Chauvin Brand of Fluorescein Sodium, Colircusi Fluoresceina, D & C Yellow No. 7, D & C Yellow No. 8, D and C Yellow No. 7
Synonyms : Angiography, Fluorescein, Angiography, Fluorescence, Fluorescence Photography, Fundus, Photography, Fundus Fluorescence
Synonyms : 5-Isothiocyanatofluorescein, Fluorescein (5 or 6)-Isothiocyanate, Fluorescein-5-isothiocyanate Hydrochloride, 5 Isothiocyanatofluorescein, Fluorescein 5 isothiocyanate, Fluorescein 5 isothiocyanate Hydrochloride, Hydrochloride, Fluorescein-5-isothiocyanate
Synonyms :
Synonyms :
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| fluorescein |
a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution and negative fluorescein ions are then absorbed)
Ãâó: wordnet.princeton.edu/perl/webwn
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| fluorescence |
light emitted during absorption of radiation of some other (invisible) wavelength
Ãâó: wordnet.princeton.edu/perl/webwn
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| fluorescent |
emitting light during exposure to radiation from an external source a lighting fixture that uses a fluorescent lamp brilliantly colored and apparently giving off light; "fluorescent colors"
Ãâó: wordnet.princeton.edu/perl/webwn
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| fluorescence microscopy |
light microscopy in which the specimen is irradiated at wavelengths that excite fluorochromes
Ãâó: wordnet.princeton.edu/perl/webwn
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| fluorescent antibody technique |
an immunofluorescence technique in which antigen in tissue sections is located by homologous antibody labeled with fluorochrome (the single-layer technique) or by treating the antigen with unlabeled antibody followed by a second layer of labeled antiglobulin which is reactive with the unlabeled antibody (double-layer technique). Variations include direct, indirect, inhibition, and complement staining techniques.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| fluoresce | exhibit or undergo fluorescence |
|---|---|
| fluoresce | a yellow dye that is visible even when highly diluted |
| fluoresce | a fluorochrome commonly conjugated with antibodies for use in indirect immunofluorescence |
| fluoresce | a fluorochrome commonly conjugated with antibodies for use in indirect immunofluorescence |
| fluoresce | a yellow dye that is visible even when highly diluted |
| fluoresce | light emitted during absorption of radiation of some other (invisible) wavelength |
| fluoresce | light microscopy in which the specimen is irradiated at wavelengths that excite fluorochromes |
| fluoresce | emitting light during exposure to radiation from an external source |
| fluoresce | brilliantly colored and apparently giving off light |
| fluoresce | a yellow dye that is visible even when highly diluted |
| fluoresce | lamp consisting of a tube coated on the inside with a fluorescent material |
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