Abstract
Mycobacterium paratuberculosis injected into the mammary gland was transported to the supramammary lymph nodes in 5 of 6 cows and to the intestine of 1 cow. The bacillus caused hypersensitivity to johnin and stimulated the production of complement-fixing antibodies. Apparently, the bacillus is not a cause mastitis.
MeSH terms
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Animals
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Cattle
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Cattle Diseases / etiology*
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Cattle Diseases / microbiology
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Cattle Diseases / pathology
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Lymph Nodes / microbiology
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Lymph Nodes / pathology
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Mammary Glands, Animal / microbiology*
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Mycobacterium / isolation & purification
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Paratuberculosis / etiology*
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Paratuberculosis / microbiology
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Paratuberculosis / pathology