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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Drug Alcohol Depend. 2011 Jan 11;116(1-3):86–92. doi: 10.1016/j.drugalcdep.2010.11.019

Figure 1.

Figure 1

Separate and combined effects of Δ9-THC and nabilone on Δ9-THC-appropriate responding on the drug-discrimination task. Filled symbols indicate values that are significantly different from placebo. Asterisks indicate combinations of Δ9-THC and nabilone that are significantly different from that dose of Δ9-THC alone. The x-axis represents the Δ9-THC dose in mg; PL denotes placebo. Data points show means of 6 subjects. Uni-directional brackets indicate 1 SEM.