(A-B) c-jun mRNA levels are decreased in all oxycodone rats. (C-D) jun-B mRNA levels are decreased in ShA and LgA-H rats. (E-F) NAc junD mRNA expression is decreased in ShA rats. (G-H) Striatal c-jun mRNA levels are not impacted by oxycodone withdrawal whereas (I-J) junB mRNA expression is increased in both LgA-L and LgA-H groups. (K-L) junD mRNA levels are increased in the striatum of ShA and LgA-L rats. The values in the bar graphs represent means ± SEM (n=5–15 animals per group). Note the differences in the scales on the Y-axis for the 3 mRNAs, with striatal junB and junD showing greater magnitude of changes in expression. Key to statistics: *, **, *** = p < 0.05, 0.01, 0.001, respectively, in comparison to saline rats; #, ## = p < 0.05, 0.01, respectively, in comparison to ShA rats.