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Representative images of ABS particles deposited in the alveolar region at days 1 and 30 of exposure using FE-SEM: (A) air-control, (B, C, D, E) day 1 of exposure, (F, G, H, I) day 30 of exposure. Scale bar at 10 mm for images B, D, and F, 5 μm for image H, 1 μm for images C, E, and G, and 500 nm for image I.
