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The influence of subchronic arsenic exposure on the BDNF levels of serum and cerebral PFC. Eight weeks after exposure to 10 mg/L arsenic or drinking water alone in normal mice and in reserpine pretreated mice, the levels of BDNF protein of serum (a) and cerebral PFC (b) were determined by enzyme-linked immunosorbent assay (ELISA). Each value/error bar is expressed as the mean ± SD of 8 mice. ∗ P < 0.05, ∗∗ P < 0.01, significant difference compared with normal control group.
