"Yin Yang" Principle Suggests New Approach To Evaluating Breast Cancer Treatments
 

About six in 10 breast cancer cases are caused when estrogen triggers cell receptors to promote abnormal cell growth leading to tumors. But if two particular receptors come together in what a University of Wisconsin-Madison researcher calls a "yin yang" relationship, one might knock down the activity of the other and breast cancer growth could be halted.

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