1. Department of Medical Histology and Cell Biology, Faculty of Medicine, Cairo University, Giza, Egypt
2. Faculty of Oral and Dental Medicine, Future University in Egypt (FUE), New Cairo City, Egypt
3. Faculty of Medicine, Cairo University, Giza, Egypt
4. Faculty of Pharmacy and Biotechnology, German University in Cairo (GUC), New Cairo City, Egypt
5. Faculty of Pharmacy, Near East University, North Cyprus, Cyprus