Morphological characteristics of mast cells in pigs’ placenta at physiological and pathological pregnancy

The research objective was to study a morphofunctional condition of mast cells of placenta in pigs, in the norm and during pathologically proceeding pregnancy. The results of histological and ultramicro- scopic research of pigs’ placenta tissues at physiologi- cally proceeding and complicated pregnancy were giv- en. The material was selected on the farm of Dergacheva (Sverdlovsk Region, Polevskoy town). The research was conducted at the Department of Morphol- ogy, Examination and Surgery of Ural State Agrarian University. The placentae from 25 pigs, with pathology of stillbirth, mummification and combined pathology were investigated. The estimation of morphological changes was made in stillbirth and mummification for three components of placenta: cytotrophoblast, vascular link and connective tissue. Quantity and quality standard of mast cells in placenta of pig was made. It was estab- lished that at pathologically proceeding pregnancy the shortening of the villi of the chorion, epithelial prolifera- tive activity, areas of necrosis of the villi, the deposition of fibrinoid in majorsince space were marked...