| MB | Bachelor of Medicine [Lat. Medicinae Baccalaureus]; buccal margin; isoenzyme of creatine kinase cont... |
|---|---|
| MBAS | methylene blue active substance |
| MBD | Marchiafava-Bignami disease; Mental Deterioration Battery; methylene blue dye; minimal brain damage;... |
| MBH2 | reduced methylene blue |
| MBR | methylene blue, reduced |
| 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine | <chemical> 1,2,3,6-tetrahydro-1-methyl-4-phenylpyridine. A dopaminergic neurotoxic compound which produces irreversible clinical, chemical, and pathological alterations that mimic those found in parkinson disease. These toxic effects can be prevented by the administration of selective monoamine oxidase inhibitors. Since the cellular toxicity of the compound is similar to that observed in idiopathic parkinson disease, experimental studies with this compound can suggest new opportunities for effective therapy. The compound also induces duodenal ulcers. Pharmacological action: dopamine agents. Chemical name: Pyridine, 1,2,3,6-tetrahydro-1-methyl-4-phenyl- (12 Dec 1998) |
|---|---|
| Rambourg's periodic acid-chromic methenamine-silver stain | <technique> A stain for glycoproteins, used with an electron microscope, adapted from the Gomori-Jones periodic acid-methenamine-silver stain; it produces silver deposits in mature saccules of the Golgi apparatus, lysosomal vesicles, cell coat, and basement membranes. (05 Mar 2000) |
| Gomori-Jones periodic acid-methenamine-silver stain | <technique> A staining method using methenamine silver, periodic acid, gold chloride, haematoxylin, and eosin to delineate basement membrane, reticulin, collagen, and nuclei; used in renal histopathology. See: Rambourg's periodic acid-chromic methenamine-silver stain. (05 Mar 2000) |
| Gomori's methenamine-silver stain | <technique> Techniques for 1) argentaffin cells: a method using a methenamine-silver solution in combination with gold chloride, sodium thiosulphate, and safranin O; argentaffin granules appear brown-black against a green background; 2) urates: warm sections are treated directly with a hot methenamine-silver solution to produce a blackening of urates; 3) fungi: see Grocott-Gomori methenamine-silver stain; 4) melanin, which reduces silver nitrate. (05 Mar 2000) |
| Grocott-Gomori methenamine-silver stain | <technique> A modification of Gomori's methenamine-silver stain for fungi in which sections are pretreated with chromic acid before addition of the methenamine-silver solution and then counterstained with light green to demonstrate black-brown fungi against a pale green background. (05 Mar 2000) |
| methenamine | <chemical> An antibacterial agent most commonly used in the treatment of urinary tract infections. Its antibacterial action derives from the slow release of formaldehyde by hydrolysis at acidic pH. Pharmacological action: anti-infective agents, urinary. Chemical name: 1,3,5,7-Tetraazatricyclo(3.3.1.13,7)decane (12 Dec 1998) |
| methenamine hippurate | Hexamethylenetetramine hippurate;a urinary antiseptic. (05 Mar 2000) |
| methenamine mandelate | C14H20N4O3;a urinary antiseptic. (05 Mar 2000) |
| methenamine salicylate | Hexamethylenetetramine salicylate;a uric acid solvent and urinary antiseptic. (05 Mar 2000) |
| methenamine-silver | A hexamethylenetetramine-silver complex prepared by adding silver nitrate to methenamine; a white precipitate appears in the solution which dissolves upon shaking and is stable under refrigeration; used in various histological and histochemical staining methods. See: Gomori's methenamine-silver stain. (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) |