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Postnatal valproic acid (VPA) treatment induced hyperactivity in Sprague-Dawley rats. An open field test was performed on postnatal day 21. (A) A total number of crossing bar (units). (B) The velocity of crossing bar. Controls: n=15; VPA treated group: n=10.
Data are expressed as mean±standard error of the mean.
The asterisks indicate significant differences (**p<0.01).
