Table 1.

The inhibitory effect of Aroclor 1254 on growth of normal endometrial cells (n = 6).

Aroclor 1254 (μg/mL)	Absorbance value	IR (%)
0	0.435 ± 0.013d	0
0.01	0.440 ± 0.021d	—
0.1	0.432 ± 0.014d	0.69
1	0.416 ± 0.008c	4.37
10	0.382 ± 0.022b	12.18
100	0.234 ± 0.025a	46.21

Note: Cells viability was monitored by the MTT assay. Cells were treated with gradient Aroclor 1254 for 48 h, and the viability was monitored. Cell viability was expressed as mean ± SEM. The inhibition ratio (IR) = 1 − (the test group OD value/the control group OD value). Compared with the control group, values marked with different letters are significant (P < 0.05).