[The phenomenon of hyperproduction and in vivo shedding of excess epithelial layers of intestinal villi].

The native mucosa of enterobioptates of different animal species and men was examined with the use of binocular magnifier in combination with microscopic studies of serial sections of some intestinal villi isolated from mucous membrane. Areas with masses of fully or partially rejected excessive epithelial structures (long folds, plates, tubules) were revealed. The phenomenon under study is one of the sources of the epithelium in the mucous layer on the luminal surface of the small intestine.

[Phenomenon of formation of structures in the dense fraction of the enteric milieu when its pH is changed].

Morphological study of the dog duodenum and ileum contents revealed that the food particles of less than 2 mm size constituted not more than 30% of the total volume of the chyme dense fraction. The main part of the dense fraction consists of the gel structures precipitating in the enteral milieu during changes of its pH due to acid content of the stomach. Histochemical reactions of these structures reveal presence of mucopolysaccharides, proteins and lipids.