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signal molecule

   Also found in: Encyclopedia 0.01 sec.
signal molecule
[sig′nəl]
Etymology: L, signum, mark
a hormone, neurotransmitter, or other agent that transfers information from one cell or organ to another. Examples include steroid hormones, insulin, and growth factors. A photon may have a similar effect on a retinal receptor.


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Mitochondria produce hydrogen peroxide as a by-product of oxygen combustion, making the chemical a candidate signal molecule.
Some of these signal molecules are androgens and some are anti-androgens.
Some of these signal molecules are androgens and some are anti-androgens.
 
 
 
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