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. 2020 Aug 28;8:814. doi: 10.3389/fcell.2020.00814

FIGURE 8.

FIGURE 8

Establishment of a PPI network to analyze protein-protein interactions. Top 50 differentially expressed genes (DEGs) were selected according to the connection degree of genes in the ACC (A,B), amygdala (C,D), and hippocampus (E,F) of 12- (A,C,E) and 24- (B,D,F) month old mice. The size of the node is determined by the connection degree. The connection degree reflects the importance of the gene in the network as it represents the number of nodes connected. The red, blue, and purple circles represent the genes related to inflammation, apoptosis and both inflammation and apoptosis, respectively.