Figure 3 Relationship between DEGs. (A) The PPI network; the more the number of connections, the more likely the interaction. (B) Common hub genes identified using different algorithms. (C) Common hub genes of the PPI network. (D) Relationship to AD group and control group related to hub genes based on the CTD. DEGs – differently expressed genes; PPI – protein–protein interactions; AD – Alzheimer’s disease; CTD – Comparative Toxicogenomics Database.