Genazzani, A R Norgestimate increases pituitary and hypothalamic concentrations of immunoreactive beta-endorphin. [electronic resource] - Contraception Nov 1989 - 605-13 p. digital Publication Type: Journal Article ISSN: 0010-7824 Standard No.: 10.1016/0010-7824(89)90132-7 doi Subjects--Topical Terms: AnimalsEstradiol--analogs & derivativesFemaleHypothalamus--metabolismNorgestrel--analogs & derivativesPituitary Gland--metabolismRadioimmunoassayRatsRats, Inbred Strainsbeta-Endorphin--immunology