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Figure 5 | Particle and Fibre Toxicology

Figure 5

From: Lung tumor promotion by chromium-containing welding particulate matter in a mouse model

Figure 5

Photomicrographs of lung tissue from MCA-treated mice. Representative photomicrographs were captured at 30 weeks after MCA-initiation and show presence of lymphoid infiltrates (i.e., inflammatory cell infiltrates consisting of peribronchial/perivascular associated lymphocytes, macrophages, and plasma cells) and welding PM (arrows) in the MCA/low GMA-SS group (left panel). An area of malignant transformation (rectangle)—larger cells with irregular nuclei and associations—in the MCA/high GMA-SS group (right panel).

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