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Effect of beta-carotene on caspase-3 protein expression in cerebral cortex of focal cerebral ischemia-reperfusion model ×200. Caspase-3 immunopositive cell was with dark brown cytoplasmic and nuclear color (arrows). (A) Sham group, (B) I/R control group, (C) βCAR-10 group, and (D) βCAR-20 group. Scale bar 50 µm.
