A, mRNA expression of TFF1 (or pS2) in MCF-7:WS8 cells after 24-hour-treatment with 1 nM E2, and 1 μM for other test compounds. B, mRNA expression of GREB1 in MCF-7:WS8 cells after 24-hour-treatment with 1 nM E2, and 1 μM for other test compounds. C, mRNA expression of TFF1 in MCF-7:5C cells after 24-hour-treatment with 1 nM E2, and 1 μM for other test compounds. D, mRNA expression of GREB1 in MCF-7:5C cells after 24-hour-treatment with 1 nM E2, and 1 μM for other test compounds.