No abstract available
MeSH terms
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Adult
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Aerosols
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Bronchi / physiology*
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Bronchi / physiopathology
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Humans
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Middle Aged
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Polytetrafluoroethylene
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Smoking / physiopathology*
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Technetium
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Time Factors
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Trachea / physiology*
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Trachea / physiopathology
Substances
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Aerosols
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Technetium
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Polytetrafluoroethylene