Fig. 1

M2 polarization of macrophages promotes GC development. A The mRNA and protein expression levels of M1 and M2 macrophage markers in GC tissues and adjacent tissues of GC patients were detected by RT-qPCR and ELISA, respectively (n = 30). B The proliferation of HGC-27 cells was detected by CCK-8 assay after co-culture of M2 and M1 macrophages with HGC-27. C The migration and invasion of HGC-27 cells were detected by Transwell assay after co-culture of M2 and M1 macrophages and HGC-27 cells (× 200). *p < 0.05