Fig. 4. Sex differences in Bdnf mRNA expression following oxycodone CPP.

A. In the medial hippocampus (MH), Oxy-females (OF) had significantly less Bdnf mRNA expression than Oxy-males (OM). B. In the lateral hippocampus (LH) there are no differences in Bdnf mRNA expression between the groups. *p < 0.05.