In the lungs, the levels of proinflammatory cytokines, including interleukin-1β (IL-1β) and granulocyte colony-stimulating factor (G-CSF), and of chemokines, including IP10/CXCL10, MIP1-α/CCL3, MIP1-β/CCL4, MIP2/CXCL2, and KC/CXCL1, were increased and remained high after the infection with WT cells (Fig. 7). This evidence concerns the gene CXCL2 and infection.