The effects of C . cicadae on MHCC97H cell cycle. (A) Cellular DNA contents in C. cicadae-treated and control cells were monitored by flow cytometry. The cell cycle distribution of sub-G1, G1, S and G2/M phase cells are presented as DNA histogram. (B) The percentage of cells in each cell cycle phase of MHCC97H after C. cicadae treatment were shown. The data were expressed as mean ± SD and were representative of three independent experiments. *, **, P < 0.05, 0.01, vs. control, respectively.