1. Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) , Riyadh 11623 , Saudi Arabia
2. Department of Zoology, College of Science, King Saud University , P. O. Box 2455 , Riyadh 11451 , Saudi Arabia
3. Department of Infection and Immunity, Research Center, King Faisal Specialist Hospital and Research Center , Riyadh , Saudi Arabia
4. Department of Biology, College of Science, Princess Nourah bint Abdulrahman University , P. O. Box 84428 , Riyadh 11671 , Saudi Arabia