However, as the name implies, any chemical agent that induces estrous in a female mammal may be called an estrogen. These ligands need not resemble the 4 adjacent carbon rings of a steroid ...
Nat Clin Pract Oncol. 2008;5(9):531-542. Thus, in HR + /HER2 + breast tumors a vicious cycle is established between ER genomic and non-genomic mechanisms of action and the growth factor receptor ...