Figure 2. The expression landscape of PRGs in LSCC patients. (A) The heatmap of the 47 PRGs between LSCC tissues and adjacent normal tissues. P-values are as follows: *P < 0.05; **P < 0.01; ***P < 0.001. (B) The boxplots of differential expression of PRGs between LSCC samples and normal tissues. (C) The PPI network of the PRGs using the STRING database. (D) The correlation network of the PRGs (red line: positive correlation; blue line: negative correlation. The depth of the colors represents the degrees of correlation).