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Comparison of the number of TUNEL staining cells in the cortex and dentate gyrus in different groups (n = 6). *Indicates statistically significant differences vs HI group values (P < 0.01). ▴ Indicates statistically significant differences between each dose groups (P < 0.01). ▾ Indicates statistically significant difference between the pre-treated and post-treated groups (P < 0.01).
