For instance, differentially expressed genes (DEGs) contained in the KEGG « Pathogenic E. coli infection-EPEC » and « Pathogenic E. coli infection-EHEC » categories include genes involved in sensing pathogens, such as TLR4, genes involved in intracellular signalling and trafficking, such as CDC42EP3, and other genes (see the online GO and KEGG databases for further details). The gene discussed is TLR4; the disease is escherichia coli infection.