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Joanna Bogucka
Department of Animal Biochemistry and Biotechnology, Laboratory of Histology, University of Science and Technology in Bydgoszcz, Mazowiecka 28, 85-084 Bydgoszcz, Poland
Wojciech Kapelański
Department of Pig Breeding and Horses, University of Science and Technology in Bydgoszcz, Mazowiecka 28, 85-084 Bydgoszcz, Poland