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The effect of triterpenes on cell cycle of A549 cells. Cells were treated with blank control (A); 7.5 μg/mL triterpenes (B); 15 μg/mL triterpenes (C); 30 μg/mL triterpenes (D); positive control CTX (10 μg/mL) (E) for 36 h, and then cell cycle analysis was determined by flow cytometry.
