Abstract
The article presents the results of the study of the pathomorphological state of the endometrium in cows with catarrhal endometritis in Kostanay region. Based on studies of tissues of reproductive organs in cows at the age of 4 to 7 years were used.with catarrhal endometritis, it was found that in the structural organization of the endometrium in cows, dystrophic processes of the of the integumentary epithelium, glandular pits with vacuolization and pyknosis of their nuclei were observed. The terminal sections of the alveolar glands of the endometrial mucosa are lined with a single-layer double-row epithelium. In the epithelium, there are simultaneously high prismatic secretory cells, enlarged in volume due to secret granules, and large, rounded cells with a large volume of light cytoplasm and a round nucleus located in the center of the cell. The mucous membrane of the uterus with catarrhal endometritis is hyperemic, during histoexamination, infiltration of the mucous membrane by plasma cells, emigration of leukocytes was noted. Polypous thickening of the uterine mucosa is detected.