Figure 2.

Dilong extract induce the expression of PCNA and promote G₁ progression. RSC96 cells were stimulated for 24 h with 125 μg ml⁻¹ Dilong extract. The protein expression of PCNA was determined by western blot. (a) α-tubulin was used as a loading control. Cell cycle distribution was analyzed using flow cytometry. (b) Data (percentage of cells in the indicated phases) are presented as means ± SD of three independent measurements. ^a P < .05, ^b P < .01, ^c P < .001, ^d P < .0001 versus the control group.