Assertion: tryptophan | /r/HasProperty | a precursor of serotonin
Facets:
Source sentences:
text: Tryptophan is a precursor of Serotonin, the hormone of wellbeing.
text: Because tryptophan is the precursor of serotonin, its reduction is thought to lower the rate of serotonin synthesis in brain (11–12).
text: In this case, a “serotonin syndrome” may happen, which is caused by the accumulation of excessive serotonin in the brain, since tryptophan is a precursor of serotonin.