(A) Representative flow cytometry dot plots from lung homogenates gated on macrophage subsets including alveolar macrophages classified as CD11bLow, CD11cHi; exudative macrophages classified as CD11bHi, CD11cHi; infiltrating macrophage classified as CD11bHi, CD11cLow. Macrophage subsets numbers of (B) alveolar macrophages, (C) exudative macrophages, and (D) infiltrating monocytes/macrophages were determined, demonstrating a significant reduction in infiltrating monocytes as a result of AT-RvD1 treatment (SPIAV-RvD1), *P<0.05, one-way ANOVA compared with SPIAV-Veh as indicated.