Fig. 5

FGF9 expression in primary tumor (a–d) and lymph node metastatic sites (e–h) of GC. a The high expression of FGF9 in CAFs, but low expression in tumor cells. b CAFs and tumor cells were both positive for FGF9. c The high expression of FGF9 in tumor cells, but low staining in CAFs. d CAFs and tumor cells were both negative for FGF9. e and f FGF9 staining was high in CAFs but low in tumor cells of both intestinal type (e) and diffuse type (f). g and h CAFs and tumor cells were both positive for FGF9 (g, intestinal type and h, diffuse type). i and j The proportion of high expressed FGF9 in CAFs and tumor cells of primary tumor (i) and lymph node metastatic sites (j). The percentage of high expressed FGF9 in LNCAFs (k) and LNT (l) of intestinal-type and diffused and mixed-type