Figure 2. Comparative analysis of immune characteristics between two clusters. (A) Expression level of stromal score, immune score, ESTIMATE score and tumor purity between the Cluster 1 and Cluster 2. (B) Comparison of immune cell proportions and (C) expression of immune cells between the two clusters. (D) Comparative analysis of functional enrichment. ns, not significant, *P < 0.05, **P < 0.01, ***P < 0.001.