Assertion: prolactin | /r/CapableOf | initiate secretion of milk
Facets:
value: by the mammary glands
type: MANNER
Source sentences:
text: Prolactin , also called luteotropic hormone (LTH) or luteotropin , a protein hormone produced by the pituitary gland of mammals that acts with other hormones to initiate secretion of milk by the mammary glands .