Enlarged Mesenteric Lymph Nodes:
Cow #13

This photo shows the serosal (external) surface of the ileum and the adjacent mesenteric lymph nodes that drain this part of the intestine, from of an experimentally M. paratuberculosis infected cow (cow #13). The pattern of diagnostic tests results for this cow are shown in another photograph (351.6K). Moderate enlargement, without caseation, of the lymph nodes is evident. From the serosal surface, the ileum appears normal. The mucosal (internal) surface is shown in another photograph (351.6K).

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Last revised February 19, 1997.
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