Figure 7. Peritoneal mesothelial cells significantly enhanced the invasiveness of gastric cancer cells. Primary or metastatic gastric cancer cells were co-cultured with HMrSV5 cells or nothing for 72 h. (A, B) The number of migrating primary or metastatic gastric cancer cells was determined with a Transwell assay. (C, D) The number of invading primary or metastatic gastric cancer cells was determined with a Transwell assay. *P<0.05, **P<0.01.