Figure 2. KDR upregulation-induced proliferation, viability, and invasion of OSCC cells. (A) mRNA downregulation of KDR in the CAL27 cell line mediated by the si-KDR 1-3 plasmid (n = 3 in each group). (B) Immigration of CAL27 cells determined by the wound healing assay (n = 3 in each group). (C) Proliferation of CAL27 cells determined by the colony formation assay (n = 3 in each group). (D) Proliferation of CAL27 cells determined by the MTT assay (n = 3 in each group). *P < 0.05 **P < 0.01.