| tertiary villus | The definitive chorionic villus with a vascular core separated from maternal blood by connective tissue, cytotrophoblast, and syncytiotrophoblast. (05 Mar 2000) |
|---|---|
| tertiary vitreous | Vitreous fibrils derived from the neuroepithelium of the ciliary body and forming the ciliary zonule. (05 Mar 2000) |
| adrenergic amine | An agent that evokes responses similar to those produced by adrenergic nerve activity (e.g., epinephrine, ephedrine, isoproterenol). Synonym: adrenergic amine, adrenomimetic amine, sympathetic amine. (05 Mar 2000) |
| adrenomimetic amine | An agent that evokes responses similar to those produced by adrenergic nerve activity (e.g., epinephrine, ephedrine, isoproterenol). Synonym: adrenergic amine, adrenomimetic amine, sympathetic amine. (05 Mar 2000) |
| amine | <biochemistry> An organic compound containing nitrogen, any member of a group of chemical compounds formed from ammonia by replacement of one or more of the hydrogen atoms by organic (hydrocarbon) radicals. The amines are distinguished as primary, secondary and tertiary, according to whether one, two or three hydrogen atoms are replaced. The amines include allylamine, amylamine, ethylamine, methylamine, phenylamine, propylamine and many other compounds. (18 Nov 1997) |
| amine oxidase | <enzyme> A group of enzymes including those oxidizing primary monoamines, diamines, and histamine. They are copper proteins, and, as their action depends on a carbonyl group, they are sensitive to inhibition by saemicarbazide. Chemical name: Amine:oxygen oxidoreductase (deaminating)(copper-containing) Registry number: EC 1.4.3.6 (12 Dec 1998) |
| amine oxidase (copper-containing) | An oxidoreductase containing copper, and perhaps pyridoxal phosphate, and carrying out the same reaction as amine oxidase (flavin-containing). Synonym: amine oxidase (pyridoxal-containing), diamine oxidase, diamino oxyhydrase, histaminase. (05 Mar 2000) |
| amine oxidase (flavin-containing) | An oxidoreductase containing flavin and oxidizing amines with the aid of O2 and water to aldehydes or ketones with the release of NH3 and H2O2. Acted upon by antidepressants. Synonym: adrenaline oxidase, diamine oxidase, monoamine oxidase, tyraminase, tyramine oxidase. (05 Mar 2000) |
| amine oxidase (pyridoxal-containing) | amine oxidase (copper-containing) |
| amine oxidoreductases | <enzyme> Enzymes catalyzing the dehydrogenation of secondary amines, introducing a c=n double bond as the primary reaction. In some cases this is later hydrolyzed. Registry number: EC 1.5. (12 Dec 1998) |
| Amine Precursor Uptake and Decarboxylation | <pharmacology, physiology> Paracrine cells of which argentaffin cells are an example. Usage of the term APUD is neither helpful nor memorable. Acronym: APUD (11 Nov 1997) |
| amine sulfotransferase | <enzyme> Catalyses reversibly the reaction of 3'-phosphoadenylylsulfate and an arylamine to yield adenosine 3',5'-bisphosphate and an arylsulfamate Registry number: EC 2.8.2.3 Synonym: aniline sulfotransferase, arylamine sulfotransferase (26 Jun 1999) |
| amine tetrazolium reductase | <enzyme> Tetrazolium salts as hydrogen acceptors Registry number: EC 1.4.- Synonym: tryptamine dehydrogenase, monoamine tetrazolium reductase, monoamine dehydrogenase (26 Jun 1999) |
| aromatic amine acetyltransferase | <enzyme> Marker for colourectal cancer Registry number: EC 2.3.1.- (26 Jun 1999) |
| aromatic amine dehydrogenase | <enzyme> Oxidatively deaminates aromatic amines to aldehydes; phenazine methosulfate acts as electron acceptor Registry number: EC 1.5.99.- (26 Jun 1999) |