XK and infection: Post-infection, naive mice displayed the highest lung infiltrations of neutrophils, plasmacytoid DCs (pDCs), CD11b+ migrating DCs (mDCs), CD103+ mDCs, eosinophils, monocytes, and monocyte-derived macrophages, whereas the NA mRNA + sFL group most effectively suppressed the infiltrations of these inflammatory cells into the lung close to a background (Fig. 6G through J; Fig. S6C through E) as determined by a multi-color flow gating strategy (Fig. S7).