No abstract available
MeSH terms
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Animals
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Binding, Competitive
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Discrimination, Psychological
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Drug Evaluation, Preclinical
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In Vitro Techniques
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Macaca mulatta
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Mice
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Muscle Contraction / drug effects
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Muscle, Smooth / drug effects
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Narcotics*
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Opioid-Related Disorders / etiology
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Rats
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Receptors, Opioid / metabolism
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Self Administration
Substances
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Narcotics
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Receptors, Opioid