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Developmental changes in Ar, Esr1, and Esr2 expression in the female (F) and male (M) mouse cortex/hippocampus at postnatal days 0, 7, 14, and 21. Gene expression was calculated relative to the average of neonatal females (0-F as 1 fold). A, B, C, D indicate significant differences between ages (p < 0.05).
