No abstract available
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Animals
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Association
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Conditioning, Classical
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Cues
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Drug Tolerance*
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Extinction, Psychological
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Heroin / administration & dosage
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Humans
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Morphine / administration & dosage
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Rats
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Recurrence
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Substance Withdrawal Syndrome / psychology
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Substance-Related Disorders / psychology*