| methylene blue | <chemical> Methylthionine chloride; dark green crystals or crystalline powder having a bronze-like luster, readily reduced to colourless leukomethylene blue, which in turn is readily oxidised to methylene blue. Used as a bacteriologic stain and as an indicator, and administered orally or intravenously in the treatment of congenital methemoglobinaemia and cyanide poisoning. Pharmacological action: anti-infective agents, urinary, antidotes, dyes. Chemical name: Phenothiazin-5-ium, 3,7-bis(dimethylamino)-, chloride (12 Dec 1998) |
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| basic fuchsin-methylene blue stain | <technique> A stain for intact epoxy sections; semi-thick sections of plastic-embedded tissues have nuclei stained purple; collagen, elastic lamina, and connective tissue are stained blue; mitochondria, myelin, and lipid droplets are stained red; cytoplasm, smooth muscle cells, axoplasm, and chrondroblasts are stained pink. (05 Mar 2000) |
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| carbon monoxide-methylene blue oxidoreductase | <enzyme> Molybdenum-containing iron-sulfur flavoprotein from pseudomonas carboxydovorans; forms carbon dioxide Registry number: EC 1.2.3.- Synonym: cm-mb oxidoreductase, carbon monoxide oxidase (26 Jun 1999) |
| polychrome methylene blue | An alkaline solution of methylene blue which undergoes progressive oxidative demethylation with aging (ripening) to produce a mixture of methylene blue, azures, and methylene violet; boiling with sodium carbonate or other oxidizing agents accomplishes this result quickly, although it is not as highly regarded. (05 Mar 2000) |
| new methylene blue | A basic thiazin dye, C18H22N3SCl, used for supravital staining of reticulocytes in blood smears. (05 Mar 2000) |
| eosin-methylene blue agar | Agar composed of peptone, lactose, and sucrose and containing eosin and methylene blue, used to distinguish between lactose-fermenting and non-lactose-fermenting Gram-negative bacteria. Synonym: EMB agar. (05 Mar 2000) |
| Kuhne's methylene blue | Methylene blue in absolute alcohol and phenol solution. (05 Mar 2000) |
| Loeffler's methylene blue | A stain for diphtheria organisms that contains methylene blue in dilute ethanol plus a slight amount of potassium hydroxide; dye solution gives best results when aged to a polychrome state. (05 Mar 2000) |
| methylene | <chemistry> A hydrocarbon radical, CH2, not known in the free state, but regarded as an essential residue and component of certain derivatives of methane; as, methylene bromide, CH2Br2; formerly called also methene. <chemistry> Methylene blue, an artificial dyestuff consisting of a complex sulphur derivative of diphenyl amine; called also pure blue. Origin: F. Methylene, from Gr. Wine + wood; a word coined to correspond to the name wood spirit. Source: Websters Dictionary (01 Mar 1998) |
| methylene azure | A mixture of azure A and B. Synonym: methylene azure. (05 Mar 2000) |
| methylene chloride | <chemical> Dichloromethane. A chlorinated hydrocarbon that has been used as an inhalation anaesthetic and acts as a narcotic in high concentrations. Its primary use is as a solvent in manufacturing and food technology. Chemical name: Methane, dichloro- (12 Dec 1998) |
| methylene tetrahydrofolate dehydrogenase-methenyltetrahydrofolate cyclohydrolase | <chemical> Bifunctional enzyme which contains mg-nad dependent covalently linked methylenetetrahydrofolate dehydrogenase (EC 1.5.1.15) and methenyltetrahydrofolate cyclohydrolase (EC 3.5.4.9); usually found in prokaryotes Synonym: methf dehydrogenase-cyclohydrolase (26 Jun 1999) |
| methylene white | The reduced and colourless form of methylene blue. Synonym: methylene white. (05 Mar 2000) |
| polyamine-methylene resin | A synthetic acid-binding resin used as a gastric antacid. (05 Mar 2000) |
| 24-methylene cycloartanol C4-monodemethylase | <enzyme> Catalyses the c4 demethylation of 24-methylene cycloartanol to cycloeucalenol; the demethylation involves a 4-methyl-4-hydroxymethyl derivative to a 4-methyl-4-carboxylic acid to a 3-keto-4-methyl cpd to the final cpd; requires NADPH and molecular oxygen; strongly inhibited by cyanide Registry number: EC 1.13.99.- Synonym: 24-mcmdase, 4,4-dimethylsterol 4-demethylase (26 Jun 1999) |
| 4-methylene-L-glutamine amidohydrolase | <enzyme> From peanut leaves Registry number: EC 3.5.1.- (26 Jun 1999) |