| cellobiose | <biochemistry> Reducing disaccharide composed of two D glucose moieties beta 1, 4 linked. The disaccharide subunit of cellulose, though not found as a free compound in vivo. (26 Mar 1998) |
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| cellobiose oxidase | <enzyme> Haem-containing flavoprotein, requires molecular oxygen Registry number: EC 1.1.3.- (26 Jun 1999) |
| cellobiosidase | <enzyme> Cleaves the penultimate glucosidic linkage of p-nitrophenyl-beta-d-cellobioside Registry number: EC 3.2.1.- (26 Jun 1999) |
| cellodextrin phosphorylase | <enzyme> Reverse reaction is used to synthesise cellodextrins Registry number: EC 2.4.1.49 (26 Jun 1999) |
| cellohexose | D-Glucose;a dextrorotatory monosaccharide (hexose) found in the free state in fruits and other parts of plants, and combined in glucosides, disaccharides (often with fructose in sugars), oligosaccharides, and polysaccharides; it is the product of complete hydrolysis of cellulose, starch, and glycogen. Free glucose also occurs in the blood (normal human concentration, 70 to 110 mg per 100 ml); in diabetes mellitus, it appears in the urine. The epimers of d-glucose are d-allose, d-mannose, d-galactose, and l-idose. Dextrose should not be confused with the l-isomer which is sinistrose. Synonym: cellohexose. (05 Mar 2000) |
| celloidin | A solution of pyroxylin in ether and alcohol, used for embedding histologic specimens. (05 Mar 2000) |
| cellon | Cl2HC-CHCl2;acetylene tetrachloride; a nonflammable solvent for fats, oils, waxes, resins, etc.; used in the manufacture of paint and varnish removers, photographic films, lacquers, and insecticides. Its toxicity exceeds that of chloroform and carbon tetrachloride, and produces narcosis, liver damage, kidney damage, and gastroenteritis. Synonym: cellon. (05 Mar 2000) |
| cellona | A cellulose bandage impregnated with plaster of Paris. (05 Mar 2000) |
| cellophane | <chemical> A generic name for film produced from wood pulp by the viscose process. It is a thin, transparent sheeting of regenerated cellulose, moisture-proof and sometimes dyed, and used chiefly as food wrapping or as bags for dialysis. Chemical name: Cellophane (12 Dec 1998) |
| cellose | <biochemistry> Reducing disaccharide composed of two D glucose moieties beta 1, 4 linked. The disaccharide subunit of cellulose, though not found as a free compound in vivo. (26 Mar 1998) |
| cells | Minute protoplasmic masses that make up organised tissue, consisting of a nucleus which is surrounded by protoplasm which contains the various organelles and is enclosed in the cell or plasma membrane. Cells are the fundamental, structural, and functional units of living organisms. (12 Dec 1998) |
| cells, cultured | Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. (12 Dec 1998) |
| cells, immobilised | Microbial, plant, or animal cells which are immobilised by attachment to solid structures, usually a column matrix. A common use of immobilised cells is in biotechnology for the bioconversion of a substrate to a particular product. (12 Dec 1998) |
| cells, reproductive | The eggs and sperm are the reproductive cells. Each mature reproductive cell is haploid in that it has a single set of 23 chromosomes. (12 Dec 1998) |
| cellubrevin | <protein> Protein involved in regulating vesicle fusin. Has 60% sequence identity with synaptobrevin (VAMP 2) and is a target for tetanus toxin. (18 Nov 1997) |
| bristle cell | Hair cell of the inner ear. (05 Mar 2000) |
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| bronchiolar exocrine cell | A rounded, club-shaped, nonciliated cell protruding between ciliated cell's in bronchiolar epithelium; believed to be secretory in function. Synonym: bronchiolar exocrine cell. (05 Mar 2000) |
| brood cell | A cell which, by division, gives rise to two or more daughter cell's. Synonym: brood cell, metrocyte, parent cell. (05 Mar 2000) |
| brown fat cell | <pathology> Brown fat is specialised for heat production and the adipocytes have many mitochondria in which an inner membrane protein can act as an uncoupler of oxidative phosphorylation allowing rapid thermogenesis. (18 Nov 1997) |
| burr cell | Triangular helmet shaped cells found in blood, usually indicative of disorders of small blood vessels. (18 Nov 1997) |
| Cajal's cell | A small fusiform cell found in the superficial layer of the cerebral cortex with its long axis placed horizontally. Synonym: Cajal's cell. (05 Mar 2000) |
| caliciform cell | 1. <pathology> Cell of the epithelial lining of small intestine that secretes mucus and has a very well developed Golgi apparatus. 2. <zoology> Cell type characteristic of larval lepidopteran midgut, containing a potent H ATPase and thought to be involved in maintenance of ion and pH gradients. (10 Oct 1997) |
| cameloid cell | An elliptical red blood corpuscle found normally in the lower vertebrates with the exception of Cyclostomata; in mammals it occurs normally only among the camels (family Camelidae), hence cameloid cell. Synonym: cameloid cell, ovalocyte. Origin: G. Elleipsis, a leaving out, an ellipse, + kytos, cell (05 Mar 2000) |
| cancer cell | A cell that divides and reproduces abnormally with uncontrolled growth. This cell can break away and travel to other parts of the body and set up another site, referred to as metastasis. (09 Oct 1997) |
| capsule cell | One of the cells located around the bodies of the cerebrospinal and sympathetic ganglionic neurons. Synonym: capsule cell. Origin: amphi-+ G. Kytos, cell (05 Mar 2000) |
| carcinoma, acinar cell | A malignant tumour arising from secreting cells of a racemose gland, particularly the salivary glands. Racemose (latin racemosus, full of clusters) refers, as does acinar (latin acinus, grape), to small saclike dilatations in various glands. Acinar cell carcinomas are usually well differentiated and account for about 13% of the cancers arising in the parotid gland. Lymph node metastasis occurs in about 16% of cases. Local recurrences and distant metastases many years after treatment are common. This tumour appears in all age groups and is most common in women. (12 Dec 1998) |
| carcinoma, basal cell | A malignant skin neoplasm that seldom metastasizes but has potentialities for local invasion and destruction. Clinically it is divided into types: nodular, cicatricial, morphaic, and erythematoid (pagetoid). More than 95% of these carcinomas occur in patients over 40. They develop on hair-bearing skin, most commonly on sun-exposed areas. Approximately 85% are found on the head and neck area and the remaining 15% on the trunk and limbs. (12 Dec 1998) |
| carcinoma, giant cell | An epithelial neoplasm characterised by unusually large anaplastic cells. It is highly malignant with fulminant clinical course, bizarre histologic appearance and poor prognosis. It is most common in the lung and thyroid. (12 Dec 1998) |
| carcinoma, islet cell | A carcinoma of the islets of langerhans. (12 Dec 1998) |
| carcinoma, large cell | A tumour of undifferentiated (anaplastic) cells of large size. It is usually bronchogenic. (12 Dec 1998) |