1. Histology and Cell Biology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
2. Pharmacology Department, Faculty of Medicine, Tanta University, Tanta, Egypt
3. Biomedical Sciences Department, Dubai Medical College for Girls, Dubai, United Arab Emarates
4. Pathology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
5. Department of Basic Medical Sciences, Unaizah College of Medicine and Medical Sciences, Qassim University, Unaizah, Kingdom of Saudi Arabia
6. Department of Biology, College of Science, University of Jeddah, Jeddah, Saudi Arabia
7. Histology and Cell Biology Department, Faculty of Medicine, Menoufia University, Shebin El Koum, Egypt