1. Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia,
2. Department of Drug Radiation Research, National Center for Radiation Research and Technology, Atomic Energy Authority, Nasr City, Cairo, Egypt,
3. Jacqui Wood Cancer Centre, Division of Cancer Research, Medical Research Institute, University of Dundee, Dundee, UK,
4. Departments of Medicine and Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA, and
5. Phytochemistry Department, National Research CenterDokki, Cairo, Egypt