Fig. 5

Detection of the invasion abilities of gastric cancer cells. a Cells cultured in DMEM with 5% FBS were used as the control. b–d Images of invading BGC-823 cells and the comparisons between the GCAF-/CM- treated groups and DMEM control group (scale bar = 250 µm). e Bilayer culture model. The upper chamber was seeded with BGC-823 cells, and the lower chamber was seeded with or without GCAFs/CM. **P < 0.01