No abstract available
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Adult
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Airway Resistance / drug effects
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Double-Blind Method
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Endorphins / metabolism
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Female
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Humans
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Male
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Middle Aged
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Naloxone / pharmacology*
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Nicotine / pharmacology
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Plethysmography / methods
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Pulmonary Ventilation / drug effects
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Random Allocation
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Respiration* / drug effects*
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Respiratory Center / drug effects
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Smoking*
Substances
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Endorphins
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Naloxone
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Nicotine