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Witold Kędzierski
Department of Biochemistry, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 13, 20-950Lublin, Poland
Zbigniew Bełkot
Department of Food Hygiene of Animal Origin, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 13, 20-950Lublin, Poland