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Photomicrograph of the lung (a) and brain (b) tissues of the control group (A) and all the FA-SnO2 NPs treated groups (B, C, and D) of Wistar rats stained by hematoxylin and eosin dyes. Note: B: Bronchiole, A: Alveoli, Ne: Neuropil, N: Neuronal cells and G: Glial cells.
