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Representative flow cytometry histograms of ATII cells (A) and macrophages (B) from lung tissues of non-treated animals (upper graphs) and animals intratracheally administered with NCs for 24 h (lower graphs). Graphical representation of the percentages of ATII cells and macrophages that were positive for Cy5 fluorescence (C). Data shown as the mean ± SEM (n = 3).
