| delta cell of pancreas | A cell of the islets having fine granules and containing somatostatin. Synonym: D cell. (05 Mar 2000) |
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| delta chain | See: immunoglobulin. The heavy chains of mouse and human IgD immunoglobulins. (18 Nov 1997) |
| delta check | A comparison of consecutive values for a given test in a patient's laboratory file used to detect abrupt changes, usually generated as a part of computer-based quality control programs. Synonym: d check. (05 Mar 2000) |
| delta fornicis | The triangular subcallosal plate of commissural fibres resulting from the converging of the right and left fornix bundles which exchange numerous fibres and which curve back in the contralateral fornix to end in the hippocampus of the opposite side. Synonym: commissura hippocampi, commissure of fornix, delta fornicis, hippocampal commissure, psalterium, transverse fornix. (05 Mar 2000) |
| delta granule | A granule of a delta cell. (05 Mar 2000) |
| delta mesoscapulae | The flat triangular surface at the vertebral extremity of the spine of the scapula over which glides the tendon for the lower fibres of the trapezius muscle. (05 Mar 2000) |
| delta rhythm | Brain waves in the electroencephalogram which have a frequency below 3 1/2 per second. They are typical in deep sleep, in infancy, and in serious brain disorders. (12 Dec 1998) |
| delta sleep-inducing peptide | <chemical> A nonapeptide that is found in neurons, peripheral organs, and plasma. This neuropeptide induces mainly delta sleep in mammals. In addition to sleep, the peptide has been observed to affect electrophysiological activity, neurotransmitter levels in the brain, circadian and locomotor patterns, hormonal levels, psychological performance, and the activity of neuropharmacological drugs including their withdrawal. Chemical name: Delta sleep-inducing peptide (12 Dec 1998) |
| delta virus | <virology> Hepatitis D virus. A defective RNA virus requiring a helper virus, usually Hepatitis B virus, for replication. Delta virus infections may exacerbate the clinical effects of Hepatitis B. (18 Nov 1997) |
| delta wave | A premature upstroke of the QRS complex due to an atrial ventricular bypass tract as in WPW syndrome. Synonym: delta rhythm. (05 Mar 2000) |
| DNA delta-helicase | <enzyme> From foetal calf thymus; partially copurifies with DNA polymerase delta; also has DNA-dependent atpase activity Registry number: EC 3.6.1.- (26 Jun 1999) |
| dodecenoyl-coenzyme A delta-isomerase | <enzyme> An auxiliary enzyme for the beta-oxidation of unsaturated fatty acids; converts both cis and trans delta(3)-enoyl CoA esters to their trans-2-counterparts Registry number: EC 5.3.3.8 Synonym: enoyl-CoA isomerase, dodecenoyl-CoA delta-isomerase, 3-cis-2-trans-enoyl-CoA isomerase, delta(3), delta(2)-enoyl-CoA isomerase (26 Jun 1999) |
| immunoglobulins, delta-chain | Heavy chains found in the fab and fc fragments of IgD and having a molecular weight of approximately 64 kD. They contain about 500 amino acid residues arranged in four domains and an oligosaccharide component covalently bound to the fc fragment. (12 Dec 1998) |
| isopiperitenone delta-isomerase | <enzyme> From peppermint; intramolecular 1,3-hydrogen transfer forms piperitenone Registry number: EC 5.3.3.11 Synonym: isopiperitenone isomerase (26 Jun 1999) |
| enoyl-CoA hydratase - 3-hydroxyacyl-CoA dehydrogenase - dodecanoyl-coenzyme A delta-isomerase | <chemical> Catalyses the second and third reactions of the fatty acid beta-oxidation cycle, converting enoyl-CoA to 3-ketoacyl-CoA; EC 4.2.1.17 and EC 1.1.1.35 and EC 5.3.3.8; consider also multifunctional protein-a Synonym: peroxisomal bifunctional enzyme, enoyl-coenzyme a hydratase -- 3-hydroxyacyl-coenzyme a dehydrogenase, peroxisomal trifunctional enzyme, delta(3), delta(2)-enoyl-CoA isomerase--2-enoyl-CoA hydratase--3-hydroxyacyl-CoA dehydrogenase (26 Jun 1999) |