1. Department of Surgery, Faculty of Medicine, University of Debrecen, Debrecen 4032, Hungary
2. Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen 4032, Hungary
3. Department of Biophysics and Cell Biology, Faculty of Medicine, University of Debrecen, Debrecen 4032, Hungary
4. Department of Physiology, McGill University, Montreal H3A 0G4, Canada
5. Institute for Nuclear Research, Debrecen 4001, Hungary