Hanna Jankowska-Ziemak a, ⁎ 
, Magdalena Kulus a, Kornelia Krajnik b, Jakub Kulus c, Mikołaj Chwarzyński a, Marcin Ciorga d, Michał Gnus a, Aleksandra Górska e, Aleksandra Partyńska h, Krzysztof Data f, Dominika Domagała f, Julia Niebora f, Teresa Wysocka g, Marek Spaczyński g, Dorota Bukowska c, Paweł Antosik a, Piotr Dzięgiel h, i, Paul Mozdziak j, Bartosz Kempisty a, f, j, k
a Department of Veterinary Surgery, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Torun 87-100, Poland
b Department of Basic and Preclinical Sciences, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Torun 87-100, Poland
c Department of Diagnostics and Clinical Sciences, Institute of Veterinary Medicine, Nicolaus Copernicus University in Torun, Torun 87-100, Poland
d Department of Public Health Protection and Animal Welfare, Nicolaus Copernicus University in Torun, Torun 87-100, Poland
e Department of Stem Cells and Regenerative Medicine, Institute of Natural Fibres and Medicinal Plants, Poznan 60-630, Poland
f Division of Anatomy, Department of Human Morphology and Embryology, Faculty of Medicine, Wroclaw Medical University, Wroclaw 50-368, Poland
g Department of Anatomy and Histology, Collegium Medicum, Institute of Health Sciences, Zielona Góra 65-046, Poland
h Division of Histology and Embryology, Department of Human Morphology and Embryology, Faculty of Medicine, Wroclaw Medical University, Wroclaw 50-368, Poland
i Department of Human Biology and Cosmetology, Faculty of Physiotherapy, Wroclaw University of Health and Sport Sciences, Wroclaw 51-612, Poland
j Prestage Department of Poultry Science, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC 27695-7608, USA
k Center of Assisted Reproduction, Department of Obstetrics and Gynecology, University Hospital and Masaryk University, Brno 62500, Czech Republic