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**Multiplication in macrophages leads to granuloma formation
 
**Multiplication in macrophages leads to granuloma formation
 
**Granulomas occur in the gut wall and mesenteric lymph nodes
 
**Granulomas occur in the gut wall and mesenteric lymph nodes
**Occasional spread from the mesenteric lymph nodes to the liver and spleen
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**Occasional spread from the mesenteric lymph nodes to the liver and [[Spleen - Anatomy & Physiology|spleen]]
 
*''Yersinia enterocolitica''
 
*''Yersinia enterocolitica''
 
**Pathogen of animals and humans
 
**Pathogen of animals and humans