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Photomicrographs showing a panoramic view of the inflammatory response in the lung tissue caused by DEP. The DEP group (b) demonstrated increased inflammatory response compared with the Ctrl group in the alveolar parenchyma (a). In detail (c), diesel particles phagocytized by a macrophage in the lung of an animal treated with DEP for 20 days. A black spot of anthracotic pigment can be observed in the inset (H&E). Scale bars = 25 μm.
