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(A) (C) (E) The representative results of cell apoptosis analysis by flow cytometer assay in A498,786-O, and ACHN cells treated with different doses of CPT for 48 h. (B) (D) (F) The percentages of surviving, early apoptotic, and late apoptotic cells of A498,786-O, and ACHN cells. Data are presented as the mean ± SD. *P < 0.05, **P < 0.01, ***P < 0.001 versus control group (n = 3).
