fig3
Figure 3. Analysis of differentially expressed genes in TCGA. (A) Volcano plot of differentially expressed genes. Green indicates downregulated genes, red indicates upregulated genes, and black indicates genes with no significant expression changes; (B) Heatmap of differentially expressed genes; (C) Box plots of immune checkpoint-related marker genes. ****P < 0.0001. Colors represent sample groups; (D) Box plots of immune activity-related marker genes. ****P < 0.0001. Colors represent sample groups. TCGA: The Cancer Genome Atlas.