No abstract available
MeSH terms
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Aged
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Bacteria / isolation & purification*
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Bronchodilator Agents / therapeutic use*
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Cytokines / analysis*
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Forced Expiratory Volume
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Humans
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Middle Aged
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Pulmonary Disease, Chronic Obstructive / drug therapy*
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Pulmonary Disease, Chronic Obstructive / immunology
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Pulmonary Disease, Chronic Obstructive / microbiology
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Sputum / immunology*
Substances
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Bronchodilator Agents
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Cytokines