1. Department of Pharmacology and Toxicology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.
2. Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
3. Department of Biology (Botany), Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia.
4. Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.