No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Amino Acid Sequence
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Animals
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Binding, Competitive / drug effects
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Brain / drug effects
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Brain / metabolism
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Guinea Pigs
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Molecular Sequence Data
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Oligopeptides / chemical synthesis
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Oligopeptides / pharmacology
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Phenylalanine / analogs & derivatives
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Receptors, Opioid / drug effects*
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Receptors, Opioid / metabolism
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Structure-Activity Relationship
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Tyrosine / analogs & derivatives*
Substances
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Oligopeptides
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Receptors, Opioid
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Tyrosine
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Phenylalanine