No abstract available
MeSH terms
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Adaptation, Physiological / drug effects
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Animals
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Humans
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Motivation
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Narcotics / pharmacology
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Nervous System / drug effects
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Nervous System / physiopathology*
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Neuropeptides / physiology
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Neurotransmitter Agents / physiology
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Opioid-Related Disorders / etiology*
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Opioid-Related Disorders / physiopathology*
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Recurrence
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Stress, Physiological
Substances
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Narcotics
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Neuropeptides
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Neurotransmitter Agents