Source:http://linkedlifedata.com/resource/umls/id/C0023566
MSH: A synthetic progestational hormone with actions similar to those of PROGESTERONE and about twice as potent as its racemic or (+-)-isomer (NORGESTREL). It is used for contraception, control of menstrual disorders, and treatment of endometriosis.,NCI: The levorotatory form of norgestrel and synthetic progestogen with progestational and androgenic activity. Levonorgestrel binds to the progesterone receptor in the nucleus of target cells, thereby stimulating the resulting hormone-receptor complex, initiating transcription, and increasing the synthesis of certain proteins. This results in a suppression of luteinizing hormone (LH) activity and an inhibition of ovulation, as well as an alteration in the cervical mucus and endometrium.,CSP: a synthetic progestational hormone; can be delivered through different routes including capsules inserted under the skin as in Norplant.,NCI: A form of the hormone progesterone that is made in the laboratory and used to prevent pregnancy. It is being studied in the prevention