| alpha1-antitrypsin |
Plasma glycoprotein member of the serpin superfamily which inhibits trypsin, neutrophil elastase, and other proteolytic enzymes. Commonly referred to as alpha 1-proteinase inhibitor (a1pi), it exists in over 30 different biochemical variant forms known collectively as the PI (protease inhibitor) system.
Ãâó: www.nutritionperspectives.com/Other/siteGlossary.c...
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| alpha2-macroglobulin |
A general endoproteinase inhibitor. Inhibits most endoproteinases, but does not inhibit endoproteinases that are highly specific for one or a limited number of sequences (eg, tissue kallikrein, urokinase, coagulation factor XIIa, and endoproteinase Lys-C).
Ãâó: www.nutritionperspectives.com/Other/siteGlossary.c...
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| alpha particle |
A type of fast ion emitted by many heavy radioactive nuclei, such as uranium. Actually, the nucleus (atom stripped of all electrons) of the gas helium.
Ãâó: www-spof.gsfc.nasa.gov/Education/wgloss.html
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| alpha radiation |
The most energetic but least penetrating form of radiation. It can be stopped by a sheet of paper and cannot penetrate human skin. However, if an alpha-emitting isotope is inhaled or ingested, it will cause highly concentrated local damage.
Ãâó: www.lrb.usace.army.mil/fusrap/glossary-ab.htm
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| alpha particle |
A particle consisting of two protons and two neutrons which has a double positive charge and a mass four times that of a proton. This is not the same as an alpha emitting particle - which is a lump of one of the elements (eg Plutonium and Uranium) which release alpha particles when atoms of that element undergo radioactive decay. A half micron particle of Uranium would be about 5000 times the diameter of an alpha particle. ...
Ãâó: www.llrc.org/jargonbuster.htm
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