| 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 It may be regarded as ammonia in which one hydrogen atom has been replaced by the radical phenyl.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) |
| algae, brown | Predominantly marine algae of the division phaeophyta, having chromatophores containing carotenoid pigments. Genera include ascophyllum, fucus, eisenia, petalonia, ectocarpus. (12 Dec 1998) |
| Bismarck brown R | A diazo dye similar to Bismarck brown Y. (05 Mar 2000) |
| Bismarck brown Y | A diazo dye used for staining mucin and cartilage in histologic sections, in the Papanicolaou technique for vaginal smears, and as one of Kasten's Schiff-type reagents in the PAS and Feulgen stains. Synonym: vesuvin. Origin: Ger. Bismarckbraun, after Otto von Bismarck, Ger. Chancellor (05 Mar 2000) |
| Blair-Brown graft | A split-thickness graft of intermediate thickness. (05 Mar 2000) |
| brown | Of a dark colour, of various shades between black and red or yellow. "Cheeks brown as the oak leaves." (Longfellow) Brown Bess, the old regulation flintlock smoothbore musket, with bronzed barrel, formerly used in the British army. Brown bread Dark coloured bread; especially. A kind made of unbolted wheat flour, sometimes called in the United States Graham bread. "He would mouth with a beggar though she smelt brown bread and garlic." . Dark coloured bread made of rye meal and Indian meal, or of wheat and rye or Indian; rye and Indian bread. Brown coal, wood coal. See Lignite. Brown hematite or Brown iron ore, a ferruginous variety of dolomite, in part identical with ankerite. Brown stone. See Brownstone. Brown stout, a strong kind of proter or malt liquor. Brown study, a state of mental abstraction or serious reverie. Origin: OE. Brun, broun, AS. Brn; akin to D. Bruin, OHG. Brn, Icel. Brnn, Sw. Brun, Dan. Bruun, G. Braun, Lith. Brunas, Skr. Babhru. 93. Cf. Bruin, Beaver, Burnish, Brunette. Source: Websters Dictionary (01 Mar 1998) |
| brown adipose tissue | A thermogenic type of adipose tissue containing a dark pigment, and arising during embryonic life in certain specific areas in many mammals, including man. It is prominent in the newborn of all species in which it occurs and remains a distinct and conspicuous tissue in the adults of certain species, especially those that hibernate. It is also called brown adipose tissue. (12 Dec 1998) |