<a href=https://tamoxifenolvadex.com/>how to reduce side effects of tamoxifen</a> However, the distinctive activities of the ER isoforms as well as the differential affinities of low concentrations of phytoestrogens for ER-¬° over ER-¬°¡¾ suggest that the net effect of phytoestrogen exposure on cell growth may be quite different from those of estrogen on the classic ER system McCarty 2006.