No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Acetylcholine / physiology
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Animals
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Depression, Chemical
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Dogs
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Electric Stimulation
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Fentanyl / pharmacology*
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Heart Rate / drug effects*
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Parasympathetic Nervous System / physiology*
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Sinoatrial Node / physiology*
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Vagus Nerve / physiology