Influenza virus-related regulatory network. KEGG pathway analysis was performed on cellular genes identified as important for influenza virus replication. The interactions between nodes in these enriched KEGG pathways were summarized to construct a combined pathway network. The degree level of each gene is represented by the size of the node. The color gradient of the green nodes, from light to dark, shows the value of in-degree of the receivers, from low to high; meanwhile, the color gradient of the red nodes, from light to dark, shows the value of out-degree of the regulators, from low to high. The nodes with degree more the 3 in the combined network were showed in the core sub-network. MiRNAs were located near their targets, and so were the virus proteins which were represented by red fonts.