DZNep reduces the invasive ability of BGC-823 cells. (A) After 2, 6, 12 and 24 h, the numbers of cells that passed through the membrane in the DZNep group were markedly lower compared with that in the control group (magnification, ×200). (B) Bar graph summarizing the numerical results with standard deviations. The differences after 12 and 24 h in the DZNep group were statistically significant. **P<0.01 vs. respective DZNep group. DZNep, 3-deazaneplanocin A.