No abstract available
MeSH terms
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Analgesia
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Analgesics / pharmacology
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Animals
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Guinea Pigs
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Ileum / drug effects
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In Vitro Techniques
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Kinetics
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Mice
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Morphine
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Muscle Contraction / drug effects
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Naloxone / pharmacology
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Oligopeptides / pharmacology*
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Tail
Substances
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Analgesics
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Oligopeptides
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Naloxone
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Morphine
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syndyphalin