RU 486

Definition / meaning of RU 486

A drug used to end early pregnancies. It is also being studied in the treatment of some types of cancer and other conditions. RU 486 blocks the action of progesterone, a hormone that helps some cancers grow. It is a type of antiprogesterone. Also called Mifeprex and mifepristone.

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Find More About 'RU 486'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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