The chemokines Ccl2, Ccl7 and Cxcl1 were also expressed at higher levels in cPLA2α−/− compared to cPLA2α+/+mice 12 h after infection, but at 24 h they decreased to a greater extent in cPLA2α−/− than cPLA2α+/+mice. This evidence concerns the gene CCL7 and infection.