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You have to wonder about the importance of etrogenic effects in the relm of trating HER2+++ cancers. Doctors terminate anti-estrogen theray when treating stage 4 or HER2 because the anti-estrogen drugs slow the replication of the cancer cells. Since chemo targets fast replicating cells, these pre-treated cancer cells may fool the chemo into thinking that they are regular (healthy) cells.
Regards,
Al
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