University of Maribor, Faculty of Medicine, Maribor, Slovenia; University of Maribor, Faculty of Natural Sciences and Mathematics, Department of Biology, Maribor, Slovenia; University of Maribor, Faculty of Chemistry and Chemical Engineering, Maribor, Slovenia; Medical University of Graz, Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Graz, Austria (At 2021-01-02)