Interestingly, the anti-inflammatory cytokine, IL-10 was secreted by ATII cells and MDM to significantly higher levels at 6 h post-BM infection compared to BP, then IL-10 levels decreased by 20 h post-infection, but remained higher than uninfected controls and BP-infected cells (p < 0.05; Figures 2C,F). Here, IL10 is linked to infection.