No abstract available
MeSH terms
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Abattoirs*
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Air Microbiology
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Animals
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Antibodies, Bacterial / analysis
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Blood
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Brucella / isolation & purification
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Brucellosis* / epidemiology
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Brucellosis* / immunology
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Brucellosis* / transmission
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California
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Cattle
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Follow-Up Studies
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Guinea Pigs
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Humans
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Illinois
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Immunity, Active
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Iowa
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Lymph
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Minnesota
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Nebraska
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Occupational Diseases*
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Swine
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Time Factors
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Virginia