Fig. 4

Immune infiltration of HCC samples between the high and low risk groups. a The relative proportion of immune infiltration in all HCC patients. b Correlation matrix of proportion of 22 immune cells. Red indicates positive correlation, blue indicates negative correlation. The darker the color, the greater the correlation. c The boxplot of immune cells with significantly different proportions of infiltration in the high low risk group. The horizontal axis is the type of immune cells, and the vertical axis is the relative infiltration proportion of immune cells. Different colors represent the high or low risk group. d The correlative circos between risk score and the expression of five prominent immune checkpoints. e The differentially expressed immune checkpoints between the high group and low risk group. *p<0.05, **p<0.01, ***p< 0.001, and ****p< 0.0001