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antiestrogen

[ ăn′tē-ĕstrə-jən, ăn′tī- ]
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n.

A substance capable of preventing full expression of the biological effects of an estrogen.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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