| alpha cell |
A type of cell in the pancreas that makes and releases a hormone called glucagon, which signals the liver to release glucose into the blood to use for energy.
출처: www.cnn.com/HEALTH/library/DA/00050.html
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|---|---|
| alpha particle |
A particle consisting of two protons and two neutrons, produced during alpha decay. Identical to the nucleus of a 4He atom.
출처: www.palaeos.com/Geochronology/gcglossary.html
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| alpha particle |
A positively charged particle, consisting of two neutrons and two protons, emitted by certain radioactive materials. Alpha particles can travel only a few inches in the air and lose their energy almost as soon as they collide with anything. They are easily shielded by a sheet of paper or the outer layer of a person
출처: www.nsc.org/ehc/guidebks/wippglos.htm
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| alpha particle |
Particle emitted in certain types of radioactive decay. It is positively charged and made up of two neutrons and two protons (which is a helium atom nucleus.) It is easily stopped, and cannot penetrate a piece of paper or the skin.
출처: www.pbs.org/wgbh/pages/frontline/shows/reaction/et...
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| alprostadil |
A type of drug called a vasodilator. These drugs can increase blood flow by expanding blood vessels.
출처: my.webmd.com/content/article/57/66235.htm
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