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Definition of 5-hydroxytryptamine
5-hydroxytryptamine: 5-HT. An important neurotransmitter made by neurons in the central nervous system. After it is released by a neuron, 5-HT activates receptors located on nearby neurons. Better known as serotonin. See: Serotonin.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=24889
Last Editorial Review: 10/22/2003
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