Assertion: tryptophan | /r/CapableOf | pass through the blood brain barrier
Facets:
value: in small amounts
type: MANNER
Source sentences:
text: Tryptophan passes through the blood brain barrier in small amounts and is used by the pineal gland as needed, and studies show that if the intake of Tryptophan is reduced or limited, synthesis of melatonin is significantly reduced.