No abstract available
MeSH terms
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Animals
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Antigens, Viral / analysis*
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Cattle
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Cattle Diseases*
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Formaldehyde
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Histological Techniques
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Immunohistochemistry / methods
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Paraffin
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Retrospective Studies
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Swine
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Swine Diseases*
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Virus Diseases / pathology
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Virus Diseases / veterinary*
Substances
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Antigens, Viral
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Formaldehyde
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Paraffin