Table 3.

The influence on MCF-7 cell proliferation (x ± SD, n = 4).

Groups	Dose (μM)	Cell Viability
Con	—	1.00 ± 0.021
17β-E2	1	1.27 ± 0.016 **
Yam (mg/ml)	10−2	1.21 ± 0.024 *
adenosine	5	1.20 ± 0.028 *
	10	1.25 ± 0.022 **
arbutin	5	1.19 ± 0.030 *
	10	1.25 ± 0.027 **

* p < 0.05; ** p < 0.01 compared to the control group.