Figure 8. Immune infiltration analysis. (A) Estimation of fractions of immune cells of each tissue, where different colors represented different immune cells. (B) The heatmap showed the infiltration difference of immune cells between the high-risk and low-risk score groups. (C) The comparison of estimated fractions of 22 immune cells between the high-risk and low-risk score groups. (D) Five ARGs were associated with tumor purity or seven important immune cells. (E) Most of immune checkpoint related genes were highly expressed in the high-risk score group.