No abstract available
MeSH terms
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Analgesics, Opioid / pharmacology*
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Animals
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Endorphins / pharmacology
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In Vitro Techniques
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Morphine Derivatives / pharmacology
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Rats
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Receptors, Opioid / metabolism
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Substance P / metabolism*
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Trigeminal Nerve / drug effects*
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Trigeminal Nerve / metabolism
Substances
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Analgesics, Opioid
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Endorphins
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Morphine Derivatives
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Receptors, Opioid
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Substance P