1. Department of Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt.
2. Assiut International Center of Nanomedicine, Al-Rajhy Liver Hospital, Assiut University, Assiut, Egypt.
3. Department of Biological Sciences, Auburn University, Auburn, Alabama.
4. Department of Anatomy, Physiology and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, Alabama.