Biochemistry a hormone released by the pituitary gland that causes increased contraction of the womb during labour and stimulates the ejection of milk into the ducts of the breasts【生化】（后叶）催产素。
Biochemistry a hormone released by the pituitary gland that causes increased contraction of the womb during labour and stimulates the ejection of milk into the ducts of the breasts【生化】（后叶）催产素。