[Dynamics of biochemical indices of dog blood serum at high altitudes and on return to low altitude].

The transfer of male dogs from lowlands to an altitude of 3370 m was accompanied by hypoproteinemia and reduction of albumins and beta-globulins, stable increase of activity of alanine aminotransferase, decrease of activity of alkaline phosphatase and content of phosphate. This can be interpreted as a manifestation of adaptive changes of metabolic processes to altitude hypoxia. The return of dogs to lowlands was accompanied by the normalization of the changes during the first 20 days.