Definition of "5-hydroxytryptamine" []

• The neurotransmitter serotonin. (noun)

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• "Chemists called it 5-hydroxytryptamine after its molecular structure."
• "“Responses of a Molluscan Smooth Muscle to Acetylcholine and 5-hydroxytryptamine.”"
• "A recent report indicated that a binding receptor for cis-UCA has been identified as the neurotransmitter 5-hydroxytryptamine, or 5HT (Serotonin) [54]."