Fig. 4From: Actions of Huangqi decoction against rat liver fibrosis: a gene expression profiling analysisDEG PPI network. a PPI network visualized by Cytoscape. Red nodes represent up-regulated DEGs, green nodes represent down-regulated DEGs, purple nodes represent connect genes, and each edge represents the interaction between them. b The degree of nodes in the PPI network followed a power law distribution, indicating that the PPI network is scale-freeBack to article page