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(A) Western blot analysis of procaspase 3 and cleaved caspase 3 in hippocampus. β-actin served as loading control. Relative protein expression levels were determined by normalizing band density of procaspase 3 (B) or cleaved caspase 3 (C) to that of β-Actin and comparing with sham group. Data are presented as mean ± SEM. N = 5. *P<0.05 and **P<0.01 vs. sham group.
