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Mean (±SEM) estimated number of BrdU-positive cells (A), average cross-sectional area (μm2; B), and average number of BrdU-positive cells per 100mm2 (C) in the dentate gyrus of prepubertal (30 days of age, white bars), mid-pubertal (45 days of age, gray bars), and adult (90 days of age, black bars) male rats. Bars that share the same letter are not significantly different from each other.
