Vlasenko , V., Pleshakova, V., Bayseitov, S. and Lescheva, N. 2021. Assessment of the Impact of Betulin on the Immune Status of Cows with Leukemia-Associated Infection. KnE Life Sciences. 6, 3 (Apr. 2021), 693–700. DOI:https://doi.org/10.18502/kls.v0i0.9006.