1. Slovak University of Technology, Faculty of Chemical and Food TechnologyDepartment of Inorganic Technology Radlinského 9 812 37 Bratislava Slovakia
2. Institute of Biophysics of the Czech Academy of Sciences Královopolská 135 61265 Brno Czech Republic
3. Department of Experimental Biology, Faculty of ScienceMasaryk University Kotlářská 2 61137 Brno Czech Republic