Figure 5. Migration and invasion ability of MDA-MB-231, SUM159PT, JIMT-1, but not ZR-75-30 cells in each group. (A–D) Migration was used to detect the number of MDA-MB-231 cells passing through the lower compartment (×400); Invasion was performed to detected the number of mDA-MB-231 cells that crossed the basement membrane (×400). *P < 0.05 and **P < 0.01 indicated statistically significant differences.