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Vet Pathol. 1985 Jan;22(1):54-9.

Scanning and transmission electron microscopy of attaching effacing Escherichia coli in weanling rabbits.


A strain of an enteropathogenic Escherichia coli, originally isolated from diarrheic weaned rabbits, produced diarrhea in five-week-old New Zealand white rabbits. Sequential examination of the intestines by scanning and transmission electron microscopy revealed that the strain attaches first to the Peyer's patch dome epithelium and later to the enterocytes of distal small intestine, cecum, and colon. Colonized cells became rounded and detached. The colibacilli were intimately associated with the apical cell membrane. Both absorptive and goblet cells were affected. The strain caused effacement of the microvillous border of colonized epithelial cells. Colibacilli were regularly seen in the partially evacuated cavities of goblet cells, but not in absorptive epithelial cells.

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