No abstract available
MeSH terms
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Adult
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Aged
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Anti-Bacterial Agents / therapeutic use
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Antibody Formation
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Bronchitis / blood
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Bronchitis / drug therapy
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Bronchitis / immunology*
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Chronic Disease
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Fluorescent Antibody Technique
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Haemophilus influenzae / immunology
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Humans
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Immunoglobulin A / analysis
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Immunoglobulin G / analysis
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Immunoglobulin M / analysis
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Immunoglobulins / analysis*
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Middle Aged
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Saliva / analysis
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Sputum / analysis
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Streptococcus / immunology
Substances
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Anti-Bacterial Agents
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Immunoglobulin A
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Immunoglobulin G
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Immunoglobulin M
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Immunoglobulins