No abstract available
MeSH terms
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Animals
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Dextroamphetamine / antagonists & inhibitors*
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Dextroamphetamine / pharmacology
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Humans
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Male
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Motor Activity / drug effects*
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Naloxone / pharmacology*
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Rats
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Stereotyped Behavior / drug effects
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Substantia Nigra / physiology
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Time Factors
Substances
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Naloxone
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Dextroamphetamine