ITGAM and infection: Due to the lack of existence of acute infection models for the murine stomach that lead to rapid neutrophilic infiltration, which would be sufficient for FACS isolation, we compared the transcriptional profiles of CD11b+Ly6G+ MDSCs from chronic 6mo H. felis infected stomachs versus CD11b+Ly6G+ neutrophils from acute 2-day C. difficile-infected ceca (Figure 2).