Mean (±SEM) number of DCX-positive cells per mm2 in dentate gyrus of prepubertal (30 days of age INT, white bars), intact late-pubertal (60 days of age INT, black bars), sham-gonadectomized late-pubertal (SHAM, 60 days of age, bars with horizontal hash lines), and gonadectomized (GDX, 60 days of age, bars with diagonal hash lines) male rats. Bars that share the same letter are not significantly different from each other.