Mehmet Y. Gunal1, Aylin O. Heper2 and Nezahat Zaloglu3
1Department of Physiology, Faculty of Medicine, Istanbul Medipol University 34810 Istanbul; Turkey
2Department of Pathology, Faculty of Medicine, Ankara University 06100 Ankara; Turkey
3Department of Physiology, Faculty of Medicine, Ankara University 06100 Ankara; Turkey.