CCR2 and infection: We therefore examined expression levels of the CXCR3 ligands CXCL10 (IP-10), CXCL11 (ITAC), as well as the CCR2 ligands CCL2 (MCP-1) on a genome-wide expression micro array performed on whole lung homogenate from mock-infected or X-31 infected mice at various hours post infection (hpi) (Figure 3D, full microarray data to be published elsewhere).