Fig. 5

AS-IV was not toxic to tumor cells. LLC, A549, and H1299 cells were treated with blank control, DMSO, 40 μM AS-IV, or 80 μM AS-IV for 48 h. The populations of cells in each phase of the cell cycle were detected by flow cytometry using PI staining. All of the data are presented as the mean ± SEM from three independent experiments