| aniline | <chemistry> An organic base belonging to the phenylamines. It may be regarded as ammonia in which one hydrogen atom has been replaced by the radical phenyl. It is a colourless, oily liquid, originally obtained from indigo by distillation, but now largely manufactured from coal tar or nitrobenzene as a base from which many brilliant dyes are made. See: Anil. Source: Websters Dictionary (01 Mar 1998) |
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| aniline blue | A mixture of sulfonated triphenylmethane dyes used widely as a connective tissue stain and counterstain. (05 Mar 2000) |
| aniline fuchsin | A mixture of aniline and basic fuchsin in 30% ethanol with a trace of phenol, as in Goodpasture's stain. (05 Mar 2000) |
| aniline hydroxylase | <enzyme> A drug-metabolizing, cytochrome p-450 enzyme which catalyses the hydroxylation of aniline to hydroxyaniline in the presence of reduced flavoprotein and molecular oxygen. Registry number: EC 1.14.14.- (12 Dec 1998) |
| aniline mustard | <chemical> N,n-bis(2-chloroethyl)aniline. Alkylating anti-neoplastic agent effective in some mouse tumours, but less useful in man. Pharmacological action: antineoplastic agent, alkylating. Chemical name: Benzenamine, N,N-bis(2-chloroethyl)- (12 Dec 1998) |
| aniline oxygenase | <enzyme> Converts substituted anilines to the corresponding catechols Registry number: EC 1.14.99.- (26 Jun 1999) |
| Mallory's aniline blue stain | <technique> A method especially suitable for studying connective tissue; sections are stained in acid fuchsin, aniline blue-orange G solution, and phosphotungstic acid; fibrils of collagen are blue, fibroglia, neuroglia, and muscle fibres are red, and fibrils of elastin are pink or yellow. Synonym: Mallory's aniline blue stain, Mallory's triple stain. (05 Mar 2000) |
| gentian aniline water | Gentian violet with saturated aniline water, a more effective stain than simple gentian violet. (05 Mar 2000) |
| Ehrlich's aniline crystal violet stain | <technique> A stain for Gram-positive bacteria. (05 Mar 2000) |
| azo dye | <chemistry> Dyes that contain the N=N linkage. They are easily prepared from diazo compounds. (18 Nov 1997) |
| radiopaque contrast dye | A radiopaque substance (for example metal) will be highlighted (appear white) on a plain X-ray. The use of iodine containing radiopaque contrast dyes allow enhancement of the anatomy demonstrable with conventional X-ray. (27 Sep 1997) |
| Motulsky dye reduction test | A test for glucose-6-phosphate dehydrogenase deficiency in the blood, using a mixture of brilliant cresyl blue, glucose-6-phosphate, and NADP. (05 Mar 2000) |
| Sabin-Feldman dye test | A method for the detection of anti-toxoplasma antibody in serum, based on the fact that Toxoplasma gondii cells (from peritoneal exudate in mice) are fairly well stained with alkaline methylene blue, whereas organisms in a serum that contains specific antibody have no affinity for the dye; furthermore, normal toxoplasma cells become rounded, and the nucleus and cytoplasm deeply stained, when treated with the methylene blue; on the other hand, when dye is mixed with organisms and antibody, the cells retain their crescent shape and only the shrunken nuclear endosome is stained. (05 Mar 2000) |
| salt dye | <technique> A compound of an acid stain and a basic stain, such as the eosinate of methylene blue, in which the anion and cation each contains a chromophore group. Synonym: salt dye. (05 Mar 2000) |
| nitro dye | <chemical> Dye's in which the chromophore is -NO2, which is so acidic that all dyes in this group are of the acid type; important examples in cytoplasmic staining are picric acid and naphthol yellow S. (05 Mar 2000) |