No abstract available
MeSH terms
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Animals
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Antibodies / analysis
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Antibody Formation*
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Hemagglutination Inhibition Tests
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Injections
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Liver / immunology*
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Lymph / analysis
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Lymph / cytology
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Lymph Nodes / immunology*
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Macrophages
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Microscopy, Electron
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Orthomyxoviridae / immunology*
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Sheep
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Swine