[Cytological organization of the gastric glands, small intestine cryptae and cortical substance of the adrenals in rats].

The frequency of distribution of DNA-synthesizing cells in the intestinal crypt, in the gland of the fundus of the stomach and adrenocortical substance was studied in rats in terms of the age aspect. The common features of cytologic organization of the test organs are as follows: irregularity in the location of DNA synthesis and mitotic zones along the linear structure of an organ; density of the features investigated in the structure of an organ depending on the cell position and animal age; shortening with age of the zone of cell division in the hepatic balk, gastric glands and intestinal crypt.