Fig. 5

Correlation between FSTL1 expression and the number of immune cell infiltrates in GC. FSTL1 expression is negatively correlated with tumor purity and positively correlated with infiltrating levels of CD8⁺ T cells, CD4⁺ T cells, macrophages, neutrophils, and DCs but no significant relationship with infiltrating level of B cells in GC (n = 415). FSTL1 follistatin-like 1, STAD stomach adenocarcinoma