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Histopathological examination by H&E staining in the hippocampus of control and ZnO NP-treated rats with or without esculetin (25 mg/kg) or fucoidan (30 mg/kg) treatment. Control (A), ZnO NPs (10 mg/kg) (B), ZnO NPs (100 mg/kg) (C), ZnO NPs (100 mg/kg) + esculetin (25 mg/kg) (D), ZnO NPs (100 mg/kg) + fucoidan (30 mg/kg) (E), esculetin (25 mg/kg) only (F), fucoidan (30 mg/kg) only (G). Scale bars = 200 μm.
