Władysław Kordan is full professor and Chair of the Department of Animal Biochemistry and Biotechnology at the University of Warmia and Mazury in Olsztyn, Poland. His work experience includes the biochemistry of animal semen, proteomics of the male reproductive system, and applications of novel methods for the improvement in the assessment of semen, including its suitability for preservation. His research can be found at https://orcid.org/0000-0001-6842-932X.