Figure 2. Effect of isocryptotanshinone (ICTS) on cell cycle distribution of MCF-7 cells. (A) Cells were treated with ICTS (0-10 µM) for 24 hours, and cell cycle distribution was analyzed using flow cytometer. (B) The percentages of each G1, S, and G2/M phase for different treatment. ^*p<0.05 compared with control group.