1. Department of Biochemistry and Molecular Biology, Faculty of Science and Informatics, University of Szeged, Középfasor 52, H-6726 Szeged, Hungary
2. Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
3. Department of Biology, Pedagogical Faculty, Selye János University, Bratislavská cesta 3322, SK-94501 Komarno, Slovak Republic