| decapacitation factor | A factor, postulated to be present in epididymal fluid and seminal plasma, that prevents the capacitation of spermatozoa. (05 Mar 2000) |
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| decapentaplegic | Drosophila gene, product related to TGF. (18 Nov 1997) |
| decapeptide | An oligopeptide containing 10 amino acids. (05 Mar 2000) |
| decaphyllous | <botany> Having ten leaves. Origin: Pref. Deca- + Gr. Leaf: cf. F. Decaphylle. Source: Websters Dictionary (01 Mar 1998) |
| decapitate | 1. To cut off the head; specifically, to remove the head of a foetus to facilitate delivery in cases of irremediable dystocia; to cut off the head of an animal in preparation for certain physiologic experiments; obsolete term. 2. Relating to an experimental animal with the head removed. Origin: L. De-, away, + caput, head (05 Mar 2000) |
| decapitation | Removal of a head. See: decapitate. (05 Mar 2000) |
| decapod | <zoology> A crustacean with ten feet or legs, as a crab; one of the Decapoda. Also used adjectively. Origin: Cf. F. Decapode. Source: Websters Dictionary (01 Mar 1998) |
| decapoda | 1. <zoology> The order of Crustacea which includes the shrimps, lobsters, crabs, etc. They have a carapace, covering and uniting the somites of the head and thorax and inclosing a gill chamber on each side, and usually have five (rarely six) pairs of legs. They are divided into two principal groups: Brachyura and Macrura. Some writers recognize a third (Anomura) intermediate between the others. 2. <zoology> A division of the dibranchiate cephalopods including the cuttlefishes and squids. See Decacera. Origin: NL, fr. Gr. Ten +, foot. Source: Websters Dictionary (01 Mar 1998) |
| decaprenyl pyrophosphate synthetase | <enzyme> Forms all-trans-decaprenyl pyrophosphate from isopentenyl pyrophosphate and either farnesyl pyrophosphate or geranylgeranyl pyrophosphate; does not transfer dimethylallyl or geranyl groups Registry number: EC 2.5.1.- Synonym: dp-pp-synthetase (26 Jun 1999) |
| decapsulation | Incision and removal of a capsule or enveloping membrane. Decapsulation of kidney, removing or stripping off the capsule of the kidney. (05 Mar 2000) |
| decarbonate | To deprive of carbonic acid. Source: Websters Dictionary (01 Mar 1998) |
| decarbonization | Rarely used term denoting the process of arterialization of the blood by oxygenation and the removal of carbon dioxide in the lungs. (05 Mar 2000) |
| decarbonize | To deprive of carbon; as, to decarbonize steel; to decarbonize the blood. Decarbonised iron. See Malleable iron. Decarbonised steel, homogenous wrought iron made by a steel process, as that of Bessemer; ingot iron. Origin: Decarbonised; Decarbonizing. Source: Websters Dictionary (01 Mar 1998) |
| decarboxylase | Any enzyme (EC subclass 4.1.1) that removes a molecule of carbon dioxide from a carboxylic group (e.g., from an alpha-amino acid, converting it into an amine). (05 Mar 2000) |
| decarboxylated dopa | <drug> A catecholamine neurotransmitter and hormone (153 D), formed by decarboxylation of dehydroxyphenylalanine (dopa). A precursor of adrenaline and noradrenaline. Pharmacologic action: 1. Precursor of norepinephrine 2. Stimulates dopaminergic, alpha and beta-1 adrenergic receptors: 3. Dopaminergic (1-2 mcg/kg per min): cerebral, renal, and mesenteric vasodilation increase urine output 4. Mixed alpha and beta-1 (2-10 mcg/kg per min): increases cardiac ouput with moderate increase systemic vascular resistance 5. Predominantly alpha (>20 mcg/kg per min): increases systemic vascular resistance Uses: 1. Treat hypotension associated with bradycardia 2. Stimulate cardiac output and urine output Dose: 1. Start infusion at 1-5 mcg/kg per min and titrate to effect. 2. Use the lowest dose that provides the desired hemodynamic improvement. 3. Do not exceed 20 mcg/kg per min. Potential complications: 1. May increase pulmonary pressure and worsen pulmonary congestion. 2. May increase myocardial work without improving coronary blood flow, exacerbating myocardial ischemia 3. Stimulates heart rate and may cause supraventricular or ventricular arrhythmias (15 Mar 2000) |