1. Faculty of Science, RECETOX, Masaryk University, Brno, Czech Republic;
2. Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic;
3. Institute of Animal Physiology and Genetics of the Czech Academy of Sciences, Brno, Czech Republic;
4. Department of Histology and Embryology, Faculty of Medicine, Masaryk University, Brno, Czech Republic