Comparison of self-administration behavior and responsiveness to drug-paired cues in rats running an alley for intravenous heroin and cocaine.

Psychopharmacology (Berl) · 2011 · PMC3053452 · PMID 21086116

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failed to reach statistical significanceno p-value reported

There was again no effect of Group, and while the Group × Trial interaction was marginal ( p < .07), it failed to reach statistical significance.

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