In order to confirm the regulatory role of miR-126 on VEGF-A expression in gastric cancer in vitro, SGC-7901 cells were infected by recombinant lentivirus miR-126 (Lenti-miR-126), lentivirus anti-miR-126 (Lenti-anti-miR-126) along with lentivirus miR negative control (Lenti-miR-NC), lentivirus anti-miR negative control (Lenti-anti-miR-NC) or transfection reagents without lentivirus vector (Mock), respectively (Fig. 4A-E). Here, VEGFA is linked to gastric cancer.