Apoptosis induced by Pim-1 siRNA in SACC cells. A. Contour diagram of Annexin-V/PI flow cytometric evaluation of apoptosis after Pim-1 and control siRNA transfection for 72 h. B. Early-apoptosis and total-apoptosis rates of SACC-83 induced by Pim-1 siRNA. C. Early-apoptosis and total-apoptosis rates of SACC-LM induced by Pim-1 siRNA. Results were shown as mean ± SD. p < 0.05, *Pim-1 siRNA group compared with control siRNA group.