No abstract available
MeSH terms
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Age Factors
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Aged
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Antibodies, Bacterial / analysis
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Bacteria / immunology
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Bacteria / isolation & purification
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Bacteriological Techniques
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Disease Outbreaks* / epidemiology
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District of Columbia
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Fluorescent Antibody Technique
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Humans
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Legionnaires' Disease* / epidemiology
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Lung / microbiology
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Michigan
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Pennsylvania
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Risk
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Staining and Labeling