Figure 9. Effect of QYFE on the protein levels of estrogen receptors (ER) α and ERβ, PR and ps2 in MCF-7 cell. Western blotting analysis was carried out as described in the Methods *P<0.05, **P<0.01, ***P<0.001, compared with con; #P<0.05, ##P<0.01, ###P<0.001, compared with 17β-estradiol (E2/) QYFE.