Figure 4.

Inhibition of AXL accelerated cell-cycle arrest and apoptosis in PC9 cells. (A) DNA fragmentation was induced following AXL knockdown by siRNA in PC9 cells. (B) Quantitative evaluation of the terminal deoxynucleotidyl transferase dUTP nick end labeling assay by flow cytometry. Mock transfection samples were used as a control. Data are presented as the mean ± standard deviation of three determinations. *P<0.05 and **P<0.01 vs. the control by analysis of variance. siRNA, small interfering RNA.