Figure 3. Correlation of SNAI1 expression with immune infiltration level in COAD (colon adenocarcinoma), READ (rectum adenocarcinoma), and STAD (stomach adenocarcinoma). (A) SNAI1 expression is significantly negatively related to tumor purity and infiltrating levels of B cells and has significant positive correlations with infiltrating levels of macrophages in STAD, other than CD8+ T cells, CD4+ T cell, neutrophils, and dendritic cells. (B) SNAI1 expression is significantly negatively related to tumor purity and infiltrating levels of B cells and has significant positive correlations with infiltrating levels of CD4+ T cell, macrophages, neutrophils, and dendritic cells in COAD, other than CD8+ T cells. (C) SNAI1 expression has no significant correlations with tumor purity, macrophages, and neutrophils in READ.