1. Department of Zoology, Science College, King Saud University, Riyadh, Saudi Arabia
2. Department of Infection and Immunity, Research Center, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
3. Department of Microbiology and Immunology, Alfaisal University School of Medicine, Riyadh, Saudi Arabia
4. Department of Biology, Science College, Al-Imam Muhammad Ibn Saud Islamic University, Riyadh, Saudi Arabia