Antiapoptotic effect of FLT3/ITD is different from that of WtFLT3. (A) After 4-hour treatment of inhibitors, each sample was lysed and subjected to immunoblotting. The experiment was the same as in Figure 3A. (B) Inhibitory effects of kinase inhibitors on the growth and viability of FLT3/ITD-32D cells. The data shown are means and SDs of 3 independent experiments.