Figure 1. Heat map and volcano map of differentially expressed genes of GSE81873 and GSE27651. (A). Heat map of DEGs in GSE81873. (B). Volcano map of DEGs in GSE81873. (C). Heat map of DEGs in GSE27651. (D). Volcano map of DEGs in GSE27651. Red dots represent up-regulated genes and blue or green dots represent down-regulated genes.