Construction of Arabidopsis immune co-expression regulatory (AICR) network. Network is displayed in Prefuse Force Directed Layout algorithm in Cytoscape. A node (blue circle) represents genes and a grey edge linking two nodes indicates the co-expression relationship between these two nodes based on Pearson Correlation Coefficient (PCC). Red nodes represent the proteins present in Plant-pathogen Interaction network (PPIN-1) . The common feature of experimental the AICR network is listed on the bottom.