Figure 4. The relationship of immune cell infiltration with UBE4B level in HCC. (A) The infiltration level of various immune cells in HCC with different copy numbers of UBE4B. (B) The correlation of UBE4B expression level with B cell, CD8+ T cell, CD4+ T cell, macrophage, neutrophil, or dendritic cell infiltration level in HCC. (C) Correlation analysis between UBE4B and biomarkers of immune cells in HCC. *P < 0.05; **P < 0.01.