1. Department of Histology and Embryology, Faculty of Medicine, Recep Tayyip Erdoğan University, Rize 53010, Turkey
2. Department of Histology and Embryology, Faculty of Medicine, Atat�rk University, Erzurum 25000, Turkey
3. Department of Medical Microbiology, Faculty of Medicine, Recep Tayyip Erdoğan University, Rize 53010, Turkey