Table 1.

The effect of xenoestrogens and 17β-estradiol on micronucleus formation in MCF-7 cells

Group	Conc (M)	Micronuclei per 1000 binucleated cells*					Fold	Trend
		Replicates			Average	SD
Benzo[a]pyrene	10−9	91	86	94	90.33	4.04	8.74
Untreated		11	12	8	10.33	2.08
Vehicle control	0.1% EtOH	7	10	13	10	3
17 β-estradiol	10−8	12	14	13	13	1	1.26	p = 0.91
	10−7	10	13	17	13.33	3.51	1.29
8-PN	10−8	16	19	21	18.67	2.52	1.81	p = 0.32
	10−7	24	20	23	22.33	2.08	2.16
Genistein	10−8	14	16	16	15.33	1.15	1.48	p = 0.61
	10−7	17	15	19	17	2	1.65
Tartrazine	10−8	21	19	25	21.67	3.06	2.10	p = 0.07
	10−7	29	31	27	29	2	2.81

*Values represent the mean ± SD of three replicates in a single experiment