CD4 and colorectal cancer: The infiltration of activated memory CD4 T cells was significantly higher in colorectal cancer samples than in normal samples [Figure 1E–G, p < 0.05, one‐sided Wilcoxon rank‐sum test, COAD (TCGA), activated memory CD4 T‐cells abundance p = 3.05e‐08; READ (TCGA), activated memory CD4 T‐cells abundance p = 0.00084; COAD READ (TCGA), activated memory CD4 T‐cells abundance p = 0.00022].