A biochemical messenger and regulator, synthesized from the essential amino acid, l-tryptophan. In humans it is found primarily in the central nervous system, gastrointestinal tract, and blood platelets. Serotonin mediates several important physiological functions including neurotransmission, gastrointestinal motility, hemostasis, and cardiovascular integrity.
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RDF/XMLCreated 2006-01-19, last modified 2013-08-21