Fig. 6

Protein–protein interaction network. a–c Protein–protein interaction network of the differently expressed proteins at 12 hpi (a), 24 hpi (b), and 48 hpi (c). Each node in the interaction network represents a protein, and the size of the node represents the number of proteins interacting with it. The larger the node, the more proteins interacting with it. The red nodes indicate up-regulated proteins and blue nodes indicate down-regulated proteins