| Abstract: | Histopathological examination of biopsies of mesenteric lymph node obtained from the region of the terminal ileum proved to be a very accurate method of diagnosing Johne's disease in the living animal. Identical conclusions were reached in 100 clinical suspects following examination of either mesenteric lymph nodes alone, or a wider range of routine specimens including ileum, caecum, colon and ileocaecal lymph nodes. A method of obtaining biopsy specimens from mesenteric lymph nodes is described and is recommended when an early definitive diagnosis is required. |
