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. Author manuscript; available in PMC: 2009 Aug 8.
Published in final edited form as: Neurosci Lett. 2008 Jun 4;440(3):284–288. doi: 10.1016/j.neulet.2008.05.103

Figure 3.

Figure 3

Heroin induced conditioned place preference in C57BL/6J (top) and 129P3/J (bottom) mice. C57BL/6J mice developed conditioned place preference to the two lowest doses of heroin tested (1.25 and 2.5 mg/kg), but not to higher doses. 129P3/J mice developed conditioned place preference to the 5, 10 and 20 mg/kg doses of heroin but not to the lower doses. Data is mean + SEM.