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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: Pharmacol Biochem Behav. 2011 Apr 22;99(3):451–458. doi: 10.1016/j.pbb.2011.04.014

Figure 2.

Figure 2

Locomotor activity, as expressed in ambulations, in rats treated with saline (Sal), methamphetamine (Ma; 0.3 mg/kg), morphine (Mor; 1.0, 5.0 or 10 mg/kg s.c.) or the combination of Ma and Mor. Left panels = total ambulations during the first 90 minutes post-injection. Right panels = total ambulations during the second 90 minutes post-injection. *=significantly different from Sal; ^=Mor/Ma significantly different from Mor alone; †=Mor/Ma significantly different from Ma alone.