ITGAX and infection: Twenty-four hours post-infection, cells from the lung parenchyma or bronchoalveolar lavage (BAL) were harvested and analyzed by flow cytometry for infection of Ly-6G+, CD11c− PMNs and Ly-6G−, CD11c+ cells that were mostly alveolar MPs (50) (see Supplementary Figures S4A–E for gating strategy) in lungs (Figure 6A), or BAL (Figure 6B).