Assertion: prolactin's effect | /r/CapableOf | act on pituitary gland
Facets:
value: directly
type: MANNER
Source sentences:
text: The effect of photoperiod is mediated by melatonin secreted from the pineal gland (385,1431, 1432), transduced through the suprachiasmatic nucleus (1582), or acting directly on the pituitary gland (1050).