To analyze effects of C. rodentium infection on epithelial Fpr2 localization we selected three time-points based on earlier work: day 10 (peak of C. rodentium density in feces: ~108 CFU/g), day 14 (start of decrease in bacterial density: ~107 CFU/g) and day 19 (close to clearance of infection: ~102–104 CFU/g) PI [28,29]. This evidence concerns the gene FPR2 and infection.