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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Behav Brain Res. 2013 Aug 28;256:420–427. doi: 10.1016/j.bbr.2013.08.035

Figure 1. MAHDR and MALDR mice did not differ in the expression of a COC-induced CPP.

Figure 1

Shown are means ± SEM sec/min spent on the grid floor during a 30-min preference test after saline treatment (A) and after COC treatment (B), as well as means ± SEM level of locomotor activity during each of the preference tests (C, D). ***: p<0.001 for the main effect of floor type (G+ or G−), indicating that COC induced a significant CPP. Data are combined for the two sexes, because sex did not significantly influence the results.