No abstract available
MeSH terms
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Animals
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Humans
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Injections, Intraperitoneal
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Levallorphan / administration & dosage
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Levallorphan / pharmacology*
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Male
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Morphine / administration & dosage
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Morphine / antagonists & inhibitors
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Morphine / metabolism
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Morphine Dependence*
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Rats
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Substance Withdrawal Syndrome*
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Time Factors