1. Department of Pharmacology Wroclaw Medical University Wroclaw Poland
2. Department of Reproduction and Clinic of Farm Animals Wroclaw University of Environmental and Life Sciences Wroclaw Poland
3. Department of Endocrinology, Diabetology and Internal Medicine Hospital in Lower Silesia Tadeusz Marciniak Center for Emergency Medicine Wroclaw Poland
4. Division of Ultrastructure Research Wroclaw Medical University Wroclaw Poland
5. Division of Histology and Embryology Department of Human Morphology and Embryology Wroclaw Medical University Wroclaw Poland