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The number of neurons in the ventral portion of the male and female mPFC at P35 and in adulthood at P90. There was a loss of neurons in females between these ages, resulting in a sex difference in adulthood. n = 9–11 per group, * indicates p ≤ 0.02. Redrawn with permission from Markham et al., (2007), Neuroscience (144) 961–968.
