| 2-desacetyl-2-hydroxyethyl bacteriochlorophyllide a dehydrogenase | <enzyme> From rhodobacter capsulatus; catalyses the penultimate step in bacteriochlorophyll a biosynthesis Registry number: EC 1.- Synonym: bchc gene product, bchc bacteriochlorophyll biosynthesis gene product (26 Jun 1999) |
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| cellulose | <plant biology> A straight chain polysaccharide composed of _(1-4) linked glucose subunits. A major component of plant cell walls where it is found as microfibrils laid down in orthogonal layers. (13 Nov 1997) |
| cellulose acetate | A polymer commonly used as a support medium for electrophoresis. (05 Mar 2000) |
| cellulose acetate phthalate | A reaction product of phthalic anhydride and a partial acetate ester of cellulose; used as a tablet-coating agent. (05 Mar 2000) |
| cellulose, oxidised | <chemical> A cellulose of varied carboxyl content retaining the fibrous structure. It is used as a local haemostatic and as a matrix for normal blood coagulation. Pharmacological action: haemostatics. Chemical name: Cellulose, 6-carboxy (12 Dec 1998) |
| cellulose synthase | <enzyme, plant biology> A enzyme which assembles sugar molecules into cellulose (a major component of the cell walls of plant cells). (13 Nov 1997) |
| cellulose tape technique | Use of a piece of transparent cellulose tape applied to a glass slide to obtain perianal samples for identification of pinworm eggs. (05 Mar 2000) |
| chromatography, deae-cellulose | A type of ion exchange chromatography using diethylaminoethyl cellulose (deae-cellulose) as a positively charged resin. (12 Dec 1998) |
| microcrystalline cellulose | Purified, partially depolymerised cellulose, prepared by treating alpha-cellulose, obtained as a pulp from fibrous plant material, with mineral acids; used as a tablet diluent. (05 Mar 2000) |
| CM-cellulose | <chemical> Polycarboxymethyl ether of cellulose. It is used as an emulsifier, thickener, suspending agent, etc., in cosmetics and pharmaceuticals; in research as a culture medium; in chromatography as a stabiliser for reagents; and therapeutically as a bulk laxative with antacid properties. Pharmacological action: cathartic, pharmaceutic aid. Chemical name: Cellulose, carboxymethyl ether, sodium salt (12 Dec 1998) |
| sodium carboxymethyl cellulose | The sodium salt of a polycarboxymethyl ether of cellulose; used as a laxative. (05 Mar 2000) |
| deae-cellulose | <chemical> Diethylaminoethylcellulose. Cellulose derivative used in chromatography, as ion-exchange material, and for various industrial applications. Chemical name: Cellulose, 2-(diethylamino)ethyl ether (12 Dec 1998) |
| O-diethylaminoethyl cellulose | Cellulose to which diethylaminoethyl groups have been attached; used in anion-exchange chromatography. Synonym: DEAE-cellulose. (05 Mar 2000) |
| O-(triethylaminoethyl) cellulose | Cellulose to which triethylaminoethyl groups have been attached; used in ion-exchange chromatography. Synonym: O-(triethylaminoethyl) cellulose. (05 Mar 2000) |
| oxidised cellulose | <surgery> Cellulosic acid in the form of an absorbable gauze which is used as a haemostatic in operations where ligation is not feasible (capillary or venous bleeding from small vessels) because cellulosic acid has a pronounced affinity for haemoglobin and produces an artificial clot. It is a sterile absorbable substance prepared by the oxidation of cotton containing not less than 16% and not more than 22% of carboxyl. See: oxycellulose. (22 Sep 2002) |