The results show that the number of SGC7901 and MGC803 cells migrating and invading to the other side of the membranes was significantly reduced in the experimental groups compared with the number of cells migrating and invading in the control groups; this indicates that the downregulation of eIF3b inhibited the invasion and migration of gastric cancer cells (Fig. 2c). The gene discussed is EIF3B; the disease is gastric cancer.