1. Virology and Immunology Unit, Cancer Biology Department, National Cancer Institute (NCI), Cairo University, Fom El-Khalig 11796, Cairo, Egypt
2. Nanotechnology Research Center (NTRC), The British University in Egypt, El-Shorouk City, Suez Desert Road, P. O. Box 43, Cairo 11837, Egypt
3. Center of Scientific Excellence for Influenza Viruses, National Research Centre (NRC), Giza 12622, Egypt
4. Biochemistry Dept, Faculty of Science, Cairo University, Egypt