Cellular composition and mitotic activity lymphocytes in peyer's lymph nodes small intestinal plaques in intact rats

Peyer's patches are an effective tool for protection against the penetration of the pathogen through the gastrointestinal tract. The small intestine, constantly interacting with natural antigens, primarily with microor- ganisms with pronounced immunogenicity, undergoes significant structural and functional rearrangements. They are expressed in changes in the linear parameters of the villi and crypts, accelerating the renewal of en- terocytes, increasing infiltration with inter-epithelial lymphocytes, enriching one's own plate with immunocom- petent cells, clearly forming the structural and functional areas of the PB