In the NOD-like receptor signalling pathway (hsa04621) 10 genes (of a total of 57 pathway genes) were differentially expressed at 4 h post infection and five of them were upregulated more than 10-fold, encoding IL6, IL1B, BIRC3, CXCL1 and CXCL2. This evidence concerns the gene CXCL1 and infection.