No abstract available
MeSH terms
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Analgesics, Opioid / pharmacology*
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Drug Tolerance / physiology*
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Humans
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Hyperalgesia / physiopathology*
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Nitric Oxide / physiology
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Receptors, N-Methyl-D-Aspartate / physiology
Substances
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Analgesics, Opioid
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Receptors, N-Methyl-D-Aspartate
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Nitric Oxide