Figure 3. CASC21 promotes CRC cells growth in vitro. (A) CCK-8 assays of HCT-116 and HCT-8 cells transfected with CASC21 siRNAs. (B) HCT-116 and HCT-8 cells transfected with CASC21 siRNAs were seeded onto 6-well plates. The number of colonies was counted on the 14th day after seeding. (C) Flow cytometric cell apoptosis assays used to assess the effect of CASC21 knockdown on cell apoptosis. All data represent mean ± SEM (n = 3-6). *P < 0.05, **P < 0.01 and ***P < 0.001.