CXCL1 and infection: Following infection with a strain where the mutation in the sigH gene was genetically complemented, the expression of 119 genes was induced >2-fold in a statistically significant manner at the 0 hr time-point (Table S1-G) Some of the genes with the greatest induction included CXCL2 (29-fold), CXCL6 (16-fold), CCL7 (11-fold) CXCL1 (6-fold), CCL3 (5-fold) and CCL4 (3-fold).