Definition: ATP (or, Adenosine triphosphate) is a source of energy for your body. This high-energy phosphate molecule is the main source of usable energy for the activities of the your cells and is the fuel responsible for muscle contraction.
ATP (Adenosine triphosphate)
By Paige Waehner, About.com Guide
Updated April 22, 2010
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
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- ATP (Adenosine triphosphate) - Definition of ATP (Adenosine triphosphate)
