Immunologic status of yaks in various ecological areas of the Republic of Tyva

The author investigates an immunologic status of alpine yaks in various polluted areas of the Republic Tyva. It was shown that the long exposure by toxic compounds result in the significant changes in different components of immune system, that is suggested by reduction in activity and intake of neutrophils, concentration of immunoglobulin G in blood serum and content of lysosomal-cation proteins in granulocytes of yaks blood.