No abstract available
MeSH terms
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Animals
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Behavior, Animal*
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Benzimidazoles / pharmacology
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Codeine / pharmacology*
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Drug Tolerance
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Humans
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Infusions, Parenteral
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Meperidine / pharmacology*
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Morphine / administration & dosage*
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Morphine Dependence*
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Nalorphine / pharmacology*
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Rats
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Substance Withdrawal Syndrome
Substances
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Benzimidazoles
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Morphine
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Meperidine
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Nalorphine
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Codeine