Protection against bovine leukemia virus infection in two breeds of cattle von Kukaine, R.A., Nagayeva, L.I, Chapenko, S.V., Iljinskaya, T.N., Bratsslavskaya, O.I., Vitolin, L.A., Yanchev, I.K., Bozhkov, S., Alexandrov, I.I., Stefanova, R.N., Florova, I.S., Parvoulov, B., Mateev, M.I., Sotirov, N.Z.

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