1. 1 Division of Histology and Embryology, Veterinary Faculty, Kafkas University 36100 Kars, Turkey
2. 2 Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Kafkas 36100 Kars, Turkey
3. 3 Division of Histology and Embryology, Veterinary Faculty, Kafkas University 36100 Kars, Turkey
4. 4 Department of Histology and Embryology, Faculty of Veterinary Medicine, University of Erciyes Kayseri, Turkey