Figure 2

Effect of staurosporine on cell viability of A549 cells by colormetric MTT assay. n = 4. Mean ± SD. a P > 0.05, b P < 0.05, c P < 0.01 vs control. Open circle represents control; solid circle represents 1 nmol/L staurosporine concentration; the cross represents 10 nmol/L staurosporine concentration and the open square represents 100 nmol/L staurosporine concentration