No abstract available
Publication types
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Adult
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Animals
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Bronchitis / epidemiology*
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Bronchitis / prevention & control
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Cattle
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Chronic Disease
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Drinking*
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Epithelium / physiology
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Humans
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Milk*
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Nutritional Physiological Phenomena
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Respiratory Physiological Phenomena*
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Smoking
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Vitamin A