Effect of PA onΔψm and ROS generation in SGC-7901 gastric cancer cells. SGC-7901 cells were treated with different concentrations of PA (20, 40 and 80 µM) for 24 h, and the Δψm was determined by (A) tetramethylrhodamine staining and analyzed by flow cytometry, and (B) ROS generation was determined by dihydroethidium staining and analyzed by flow cytometry. #P<0.001 and *P<0.05 vs. the control group. PA, pachymic acid; ROS, reactive oxygen species.