No abstract available
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
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Comment
MeSH terms
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Analgesics, Opioid
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Animals
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Female
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Fentanyl*
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Food Preferences
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Male
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Rats
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Reinforcement, Psychology
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Sex Characteristics*
Substances
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Analgesics, Opioid
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Fentanyl