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MeSH terms
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Abattoirs
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Adolescent
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Adult
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Aged
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Agglutination Tests
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Animal Husbandry*
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Animals
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Brucella abortus / isolation & purification*
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Brucellosis / diagnosis*
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Cattle
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Complement Fixation Tests
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Female
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Food-Processing Industry*
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Humans
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Male
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Meat
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Middle Aged
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Occupational Diseases / diagnosis*
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Poland