| GABAT, GABA-T | gamma-aminobutyric acid transaminase |
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| GABOA | gamma-amino-beta-hydroxybutyric acid |
| GABRA | gamma-aminobutyric acid alpha receptor |
| GBH | gamma-benzene hexachloride; graphite benzalkonium-heparin |
| GFP | gamma-fetoprotein; gel-filtered platelet; glomerular filtered phosphate |
| gamma efferent | The thin axon of a gamma motor neuron innervating the intrafusal muscle fibres of a muscle spindle. (05 Mar 2000) |
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| gamma emission | <physics> Nuclear decay process whereby the nucleus goes from an excited state to a more stable state by emitting a gamma ray. See: gamma ray. (09 Oct 1997) |
| gamma encephalography | Imaging of the encephalon by the administration of small amounts of gamma-emitting radionuclides; commonly called a brain scan; superseded by computed tomography and magnetic resonance imaging. (05 Mar 2000) |
| gamma-endorphin | <chemical> An endogenous opioid peptide derived from the pro-opiomelanocortin precursor peptide. It differs from alpha-endorphin by one amino acid. Chemical name: gamma-Endorphin (12 Dec 1998) |
| gamma fibres | Nerve fibre's that have a conduction rate of about 20 m/sec. See: gamma efferent. (05 Mar 2000) |
| gamma globulin | <immunology> A non-specific immunoglobulin (antibody) administered for the purpose of passive immunity. A common example is hepatitis A prophylaxis. (27 Sep 1997) |
| gamma-globulins | Serum globulins that migrate in the gamma region on electrophoresis. At one time, gamma-globulins came to be used as a synonym for immunoglobulins since most immunoglobulins are gamma globulins. But since some immunoglobulins exhibit an alpha or beta electrophoretic mobility, that usage is in decline. (12 Dec 1998) |
| gamma-glutamyl carboxylase | <enzyme> An enzyme that catalyses the formation of gamma-carboxyglutamyl residues in many proteins, several appearing in the blood clotting cascade. (05 Mar 2000) |
| gamma-glutamyl cycle | A proposed pathway for the glutathione-dependent transport of certain amino acids (most notably l-cystine, l-methionine, and l-glutamine) and dipeptides into certain cells; this cycle requires the formation of gamma-glutamyl amino acids and gamma-glutamyl dipeptides as well as a protein for the translocation of these di-and triisopeptides into the cells. (05 Mar 2000) |
| gamma-glutamylcyclotransferase | <enzyme> An enzyme that catalyses the synthesis of pyroglutamate from a gamma-glutamyl-amino acid, also releasing the free amino acid. The enzyme acts on derivatives of glutamate, 2-aminobutyrate, alanine and glycine. The enzyme has been proposed to have a role in a gamma-glutamyl cycle for amino acid transport into cells in the intestines. Chemical name: (5-L-Glutamyl)-L-amino-acid 5-glutamyltransferase (cyclizing) Registry number: EC 2.3.2.4 (12 Dec 1998) |
| gamma-glutamylcysteine | A necessary precursor in the biosynthesis of glutathione; contains an isopeptide rather than a eupeptide bond. Gamma-glutamylcysteine synthetase, an enzyme that catalyses the first step in glutathione biosynthesis, reacting l-glutamate, l-cysteine, and ATP to form gamma-glutamylcysteine, ADP, and orthophosphate; inhibited by thiols such as glutathione. (05 Mar 2000) |
| gamma-glutamyl dipeptidase | <enzyme> Removes glycine from leukotriene d4 to form leukotriene e4 Registry number: EC 3.4.13.- (26 Jun 1999) |
| gamma-glutamylhistamine synthetase | <enzyme> Incorporates histamine or other amines into peptide linkage with glutamate; from aplysia ganglia Registry number: EC 6.3.2.- Synonym: gamma-gha synthetase, gamma-glutamyl amine synthetase, gamma-glutamyl octopamine synthetase, gamma-glutamyl tyramine synthetase (26 Jun 1999) |
| gamma-glutamyl hydrolase | N-Pteroyl-l-glutamate hydrolase;an enzyme cleaving l-glutamyl residues from pteridine oligoglutamates; used in certain antitumour treatments. Synonym: carboxypeptidase G, conjugase, gamma-glutamate (glutamate gamma-) carboxypeptidase. (05 Mar 2000) |
| gamma-glutamyltransferase | <enzyme> An enzyme that catalyses reversibly the transfer of a glutamyl group from a glutamyl-peptide and an amino acid to a peptide and a glutamyl-amino acid. It is often elevated above normal in hepatitis and other conditions that cause chemical liver damage. Chemical name: (5-L-Glutamyl)-peptide:amino-acid 5-glutamyltransferase Registry number: EC 2.3.2.2 Acronym: GGT (12 Sep 2002) |
| gamma rays |
a type of electromagnetic radiation with a very short wavelength and high Energy level. Generally, emitted during radioactive decay of a substance.
출처: www.science501.com/PTWeaGlGM.html
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| gamma rays |
Penetrating electromagnetic waves or rays emitted from nuclei during radioactive decay, similar to X-rays. Dense materials such as concrete and lead are used to provide shielding against gamma radiation.
출처: www.fusrapmaywood.com/factsheet/gloss.htm
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| gamma rays |
Gamma rays are an example of electromagnetic radiation, as is visible light. Gamma rays originate from the nucleus of an atom. They are capable of traveling long distances through air and most other materials. Gamma rays require more "shielding" material, such as lead or steel, to reduce their numbers than is required for alpha and beta particles.
출처: www.hps1.org/glossary/glossary.htm
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| gamma rays |
are photons emitted during nuclear de-excitation processes. These gamma-ray transitions may be from a metastable excited state, or between levels in a daughter nucleus. The large majority of gamma rays from fission-product and man-made radionuclides have energies between 20 keV and 2 MeV.
출처: physics.nist.gov/Divisions/Div846/Glossary/glossar...
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| gamma rays |
(of Radiation): Electromagnetic radiation of high photon energy originating in atomic nuclei and accompanying many nuclear reactions (eg, fission, radioactivity, and neutron capture). Physically, gamma rays are identical with x-rays of high energy, the only essential difference being x-rays do not originate from atomic nuclei, but are produced in other ways (eg, by slowing down (fast) electrons of high energy). See x-rays. ...
출처: www.dtra.mil/toolbox/directorates/td/programs/rtfc...
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