Alan Majeranowski1, Marcin Okrój2. 1. Intercollegiate Faculty of Biotechnology of the University of Gdańsk and the Medical, University of Gdańsk, Gdańsk, Poland. a.majeranowski@gumed.edu.pl. 2. Intercollegiate Faculty of Biotechnology of the University of Gdańsk and the Medical, University of Gdańsk, Gdańsk, Poland.