Figure 2. Identification of HARlncRNAs in ESCA. (A) Volcano plot of differentially expressed lncRNAs between tumor tissues and normal tissues. (B) Heatmap of differentially expressed lncRNAs between tumor tissues and normal tissues. (C) Co-expression relationship between HARlncRNAs and HARGs. (D) Scatter diagram indicated the different expression of HARlncRNAs in normal and tumor tissues. *P < 0.05; **P < 0.01; ***P < 0.001.