TY JOUR TI CORRECTION OF IMMUNE STATUS OF FUR ANIMALS USING BIOLOGICALLY ACTIVE PREPARATIONS KW mink KW blood KW serum KW natural resistance JO Bulletin of KSAU AU Beltykova, Z.N. AU Okulova, I.I. AU Berezinza, U.A. AU Kochurnikova, M.A. PY 2018 IS PB Krasnoyarsk State Agrarian University