Table 1.

IC₅₀ values of cell response to OHT or ICI as compared using one-way ANOVA. OHT, 4-hydroxytamoxifen; ICI, ICI182,780.

	Cell Line	OHT	ICI
IC50 (nM)	MCF7-WT	2.26 ± 0.90	0.76 ± 0.06
	MCF7-ERβ1	0.59 ± 0.09	0.55 ± 0.03
	MCF7-ERβ2	2.46 ± 0.35	0.96 ± 0.08
p value	MCF7-WT vs. MCF7-ERβ1	0.046	0.025
	MCF7-WT vs. MCF7-ERβ2	0.794	0.027
	MCF7-ERβ1 vs. MCF7-ERβ2	0.030	0.000