Table 3. The MCF-7 cells apoptosis induced by resveratrol and piceid.

	Control	Resveratrol (µmol/L)				Piceid (µmol/L)
		10	50	100	300	10	50	100	300
Late apoptosis rate (%)	2.7±0.7	2.6±0.8	3.2±0.4	5.2±1.2	6.1±1.9*	2.1±0.5	3.4±1.1	3.5±1.3	3.9±1.3
Early apoptosis rate (%)	3.2±1.2	3.0±1.1	4.8±1.5	8.5±2.0	14.2±3.0**	3.0±1.2	4.2±1.7	4.6±1.7	6.0±1.8
Total apoptosis rate (%)	5.9±1.7	5.6±1.6	7.8±2.3	13.7±3.2	20.3±4.7**	5.1±1.8	7.6±2.6	8.1±3.0	9.9±2.9

^*P<0.05 vs control,

^**P<0.01 vs control, n = 3.