| MNL | marked neutrophilic leukocytosis; maximum number of lamellae; mononuclear leukocyte |
|---|---|
| MPN | most probable number |
| NA | Avogadro constant or number; nalidixic acid; Narcotics Anonymous; network administrator; neuraminida... |
| Na | Avogadro number; sodium [Lat. natrium] |
| Nacq | number of acquisitions |
| carbon dioxide electrode | A glass electrode in a film of bicarbonate solution covered by a thin plastic membrane permeable to carbon dioxide but impermeable to water and electrolytes; the carbon dioxide pressure of a gas or liquid sample quickly equilibrates through the membrane and is measured in terms of the resulting pH of the bicarbonate solution, as sensed by the glass electrode; commonly used to analyze arterial blood samples. Synonym: Severinghaus electrode. (05 Mar 2000) |
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| carbon dioxide elimination | The rate at which carbon dioxide enters the alveolar gas from the blood, equal in the steady state to the metabolic production of carbon dioxide by tissue metabolism throughout the body; units: ml/min STPD or mmol/min. (05 Mar 2000) |
| carbon dioxide-free water | Purified water that has been boiled vigorously for 5 minutes or more. (05 Mar 2000) |
| carbon dioxide reductase | <enzyme> Co is oxidised to co2; carbon dioxide may be reduced to formate; co dehydrogenase contains a (ni/fe-s) enzyme and a (corrinoid/fe-s) enzyme component; has co-beta-methylcobamide/tetrahydropteridine methyltransferase and acetyl-CoA synthase activities Registry number: EC 1.2.99.2 Synonym: co2 reductase, ferredoxin-co2 oxidoreductase, carbon monoxide dehydrogenase, co dehydrogenase, formate dehydrogenase, ferredoxin-dependent, acetyl-CoA decarbonylase synthase complex, acds complex, molybdenum co dehydrogenase (26 Jun 1999) |
| carbon dioxide snow | Solid carbon dioxide used in the treatment of warts, lupus, nevi, and other skin affections, and as a refrigerant. Synonym: dry ice. (05 Mar 2000) |
| carbon disulfide | <chemical> Carbon disulfide (cs2). A colourless, flammable, poisonous liquid, cs2. It is used as a solvent, and is a counterirritant and has local anaesthetic properties but is not used as such. It is highly toxic with pronounced CNS, haematologic, and dermatologic effects. Chemical name: Carbon disulfide (12 Dec 1998) |
| carbon disulfide poisoning | Acute or chronic intoxication by CS2, an industrial condition encountered among rubber workers and makers of artificial silk (rayon) by the viscose process; characterised by insomnia, listlessness, and irritability, followed by paralyses, impaired vision, peptic ulcer, and psychoses. (05 Mar 2000) |
| carbon fixation | <plant biology> The process by which photosynthetic organisms such as plants turn inorganic carbon (usually carbon dioxide) into organic compounds (us. Carbohydrates). (09 Oct 1997) |
| carbon isotopes | Stable carbon atoms that have the same atomic number as the element carbon, but differ in atomic weight. C-13 is a stable carbon isotope. (12 Dec 1998) |
| carbon monoxide | <chemical> An organic byproduct of combustion, tasteless, odourless gas that competes with oxygen binding sites on the haemoglobin molecule. Early symptoms of carbon monoxide exposure include headache and nausea. Advanced exposure results in coma, cardiovascular collapse and death. (27 Sep 1997) |
| carbon monoxide dehydrogenase disulfide reductase | <enzyme> Catalyses a reversible exchange of coash with acetyl-CoA in combination with carbon monoxide dehydrogenase (EC 1.2.99.2) Registry number: EC 1.8.- Synonym: co dehydrogenase disulfide reductase, co-dd-reductase (26 Jun 1999) |
| carbon monoxide haemoglobin | <chemical> Chemical name: Haemoglobins, carbonyl- (12 Dec 1998) |
| 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) |
| carbon monoxide poisoning | Toxic asphyxiation due to the displacement of oxygen from oxyhemoglobin by carbon monoxide. (12 Dec 1998) |
| carbon-nitrogen ligases | <enzyme> Enzymes that catalyze the joining of two molecules by the formation of a carbon-nitrogen bond. Registry number: EC 6.3 (12 Dec 1998) |