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Number of neutrophils (n = 10) periairway and surrounding alveoli (A), macrophages (B), and T cells (C) found periairway in the lungs of MMP-12+/+ control versus MMP-12−/− mice after CRA-induced inflammation (n = 18). Neutrophils were determined by H&E-stained sections. Macrophages and T cells were determined by immunofluorescence microscopy. Mean +/− SEM. Original magnifications, ×40.
