| OCS | occipital condyle syndrome; Ondine's curse syndrome; open canalicular system; oral contraceptive ste... |
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| OCT | object classification test; optimal cutting temperature; oral contraceptive therapy; ornithine carba... |
| OES | oral esophageal stethoscope; optical emission spectroscopy |
| OGTT | oral glucose tolerance test |
| OHA | oral hypoglycemic agents |
| bile acid 7 alpha-dehydroxylase | <enzyme> Mechanism is questionable: cholic acid - deoxycholic acid - chenodeoxycholic acid - lithocholic acid Registry number: EC 1.14.- Synonym: 7 alpha-dehydroxylase, bile acid 7-dehydroxylase, bile acid 7-alpha-dehydroxylase, bai a1, bai a2, bai a3, cholic acid 7alpha-dehydroxylase (26 Jun 1999) |
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| bile acid-CoA ligase | <enzyme> Catalyses the synthesis of all bile acid-coas; in order to measure the activity of all bile acids, the bile acid is coupled with c(14)-glycine and measured with bile acid-CoA glycine-taurine n-acetyltransferase Registry number: EC 6.2.1.- (26 Jun 1999) |
| bile acid tolerance test | A sensitive test of hepatic dysfunction; following oral administration of labelled or unlabelled bile acid, the measured fractional disappearance rate or 10-minute retention is measured. (05 Mar 2000) |
| binary acid | <chemistry> This refers to any compound that acts as an acid and which is composed of hydrogen plus only one other element. (09 Oct 1997) |
| boletic acid | An obsolete term for fumaric acid. (05 Mar 2000) |
| bongkrekic acid | <chemical> An antibiotic produced by pseudomonas cocovenenans. It inhibits adenine nucleotide efflux from mitochondria by enhancing membrane binding. Pharmacological action: antibiotics. Chemical name: 2,4,8,10,14,18,20-Docosaheptaenedioic acid, 20-(carboxymethyl)-6-methoxy-2,5,17-trimethyl-, (R-(R*,S*-(E,Z,Z,E,E,Z,E)))- (12 Dec 1998) |
| boracic acid | H3BO3;a very weak acid, used as an antiseptic dusting powder, in saturated solution as a collyrium, and with glycerin in aphthae and stomatitis. Synonym: boracic acid. (05 Mar 2000) |
| boric acid | H3BO3;a very weak acid, used as an antiseptic dusting powder, in saturated solution as a collyrium, and with glycerin in aphthae and stomatitis. Synonym: boracic acid. (05 Mar 2000) |
| branched-chain fatty-acid-kinase | <enzyme> From anaerobic spirochete ma-2 Registry number: EC 2.7.2.14 Synonym: isovalerate kinase, 2-methylbutyrate kinase, isobutyrate kinase (26 Jun 1999) |
| branched-chain fatty acid synthetase | <enzyme> Analogous to fatty acid synthetase complex but starting with a branched chain keto acid; from bacillis subtilis Registry number: EC 2.3.1.- Synonym: bcfa synthetase (26 Jun 1999) |
| Bronsted acid | An acid that is a proton donor. (05 Mar 2000) |
| butanoic acid | Systematic name for normal n-butyric acid. (05 Mar 2000) |
| butyric acid | An acid of unpleasant odour occurring in butter, cod liver oil, sweat, and many other substances. It exists in two forms: (05 Mar 2000) |
| cacodylic acid | <chemical> An arsenical that has been used as a dermatologic agent and as an herbicide. Pharmacological action: dermatologic agents, herbicides. Chemical name: Arsinic acid, dimethyl- (12 Dec 1998) |
| calcitroic acid | Rarely used term for a metabolite of calcitriol, involving the loss of carbons 24, 25, 26, and 27 and the oxidation of carbon 23 to a carboxylic acid; its function is unknown. (05 Mar 2000) |