PTGER2 and infection: Mice begin to recover from infection and resolve the inflammation in the lungs at 9 dpi, and we found that the EP2 antagonist-treated mice exhibited a ~1.75-fold increase in the immunosuppressive cytokine IL-10 at 9 dpi (Fig. 6g), indicating that the EP2 antagonist-treated mice are better able to resolve the inflammation within the lungs than vehicle-treated counterparts.