[Ultrastructure of the epithelial cells of the duodenum at the early stages of experimental Escherichia infection].

Ultrastructural changes of duodenal epitheliocytes were studied at the period from 15 minutes to 24 hours after inoculation using the model of experimental esherichiosis. The results obtained allow to determine the succession of ultrastructural changes and dynamics of adenylate cyclase activity of epithelial cells, involvement of endocrine cells in the pathological process. Combination of the certain morphological and cytochemical reactions and their dynamics allowed to make conclusions about typical ultrastructural changes in epitheliocytes at the early stages of experimental esherichiosis.