Elevated expression of BCAR4, p-mTOR and p-P70S6K in chondrosarcoma cell lines. (a) The expressions of BCAR4, (b) mTOR, p-mTOR, p-P70S6K and P70S6K in chondrosarcoma cell lines (SW1353, HS819.T and HCS-2/8) were examined, with normal chondrocytes (C-28/I2) as the control. GAPDH and β-actin were used as control for normalization. respectively. **P < 0.001 vs. the control