No abstract available
MeSH terms
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Animals
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Brain / metabolism*
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Brain Chemistry / drug effects
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Brain Stem / analysis
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Caffeine / pharmacology*
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Carbon Isotopes
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Cerebral Cortex / analysis
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Female
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Guinea Pigs
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Male
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Norepinephrine / analysis
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Norepinephrine / biosynthesis
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Norepinephrine / metabolism*
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Norepinephrine / pharmacology*
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Rats
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Tritium
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Tryptophan / metabolism
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Tyrosine / metabolism
Substances
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Carbon Isotopes
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Tritium
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Caffeine
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Tyrosine
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Tryptophan
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Norepinephrine