Figure 2: Effect of crebanine N-oxide on cell cycle arrest at G2/M phase in human gastric cancer SGC-7901 cells. (A) Flow cytometry assay after propidium iodide staining; (B) Apoptosis rate; (C) Percentage of cells at different phases. Creb: Crebanine N-oxide; HCPT: hydroxycamptothecin. All experiments were performed in triplicate. P <0.05, P <0.01 vs. vehicle control group.