Look up: Fluorescein

1. 
   Fluorescein
   Fluorescein is an organic compound obtained by heating together pthalic anhydride and resorcinol. It is a red powder insoluble in water, but it dissolves in alcohol and also in alkalis, giving a brilliant green flourescence. It is used as a dye.
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2. 
   Fluorescein
   A fluorescent substance adsorbed to antibodies in order to facilitate their detection and location on a tissue.
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3. 
   fluorescein
   [n] - a yellow dye that is visible even when highly diluted
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4. 
   fluorescein
   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.
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5. 
   Fluorescein
   Flu`o·res'ce·in noun (Chemistry) A yellowish red, crystalline substance, C ₂₀ H ₁₂ O ₅ , produced by heating together phthalic anhydride and resorcin; -- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin .
   Found on http://www.encyclo.co.uk/webster/F/49
   
   
6. 
   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 ...
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7. 
   Fluorescein
   } `Fluorescein` is a fluorophore commonly used in microscopy, in a type of dye laser as the gain medium, in forensics and serology to detect latent blood stains, and in dye tracing. Fluorescein has an absorption maximum at 494 nm and emission maximum of 521 nm (in water). Also, fluorescein has an isosbestic point (equal absorption for all pH values) at 460 nm. Fluorescein is also known as a color additive (D&C Yellow no. 7). The disodium salt for...
   Found on http://en.wikipedia.org/wiki/Fluorescein
   
   
8. 
   fluorescein
   (fldbobr-res´ēn) a fluorescing dye; the sodium salt is used as a contrast medium in retinal angiography and as a diagnostic aid for revealing corneal lesions and fitting contact lenses.
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9. 
   Fluorescein
   • (n.) A yellowish red, crystalline substance, C20H12O5, produced by heating together phthalic anhydride and resorcin; -- so called, from the very brilliant yellowish green fluorescence of its alkaline solutions. It has acid properties, and its salts of the alkalies are known to the trade under the name of uranin.Fluorescein: words in the defi...
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10. 
    fluorescein
    organic compound of molecular formula C20H12O5 that has wide use as a synthetic colouring agent. It is prepared by heating phthalic anhydride and ... [2 related articles]
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11. 
    fluorescein
    An orange-red crystalline powder that yields a bright green fluorescence in solution, and is reduced to fluorescin; a nontoxic, water-soluble indicator used diagnostically to trace water flow. Syn: resorcinol phthalic anhydride, resorcinolphthalein
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12. 
    fluorescein
    A synthetic dye made by fusing resorcinol with phthalic anhydride (see acid anhydride) and zinc chloride catalyst. A red crystalline solid, fluorescein dissolves in alkalis to give a deep red solution showing very intense yellow-green fluorescence, visible at very low concentrations. It is used as a...
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