TRYPTOPHAN

noun. one of the vital amino acids of a human being's diet. It is a precursor of the neurotransmitter serotonin and plays a part in general physiological procedures. Tryptophan depletion, loss of within the brain, might be induced for research reasons.

TRYPTOPHAN: "With regard to many animals and plants, tryptophan is a precursor of the B vitamin nicotinic acid."
Cite this page: N., Pam M.S., "TRYPTOPHAN," in PsychologyDictionary.org, April 29, 2013, https://psychologydictionary.org/tryptophan/ (accessed July 23, 2019).
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