Affiliation: | 1. Department of Natural Compounds Chemistry, National Research Centre, , 12622 Cairo, Egypt;2. Chemistry of Tannins Department, National Research Centre, , Dokki, 12622 Cairo, Egypt;3. Department of Human Enzymes and Proteins, National Research Centre, , 12622 Cairo, Egypt;4. Department of Pathology, National Research Centre, , 12622 Cairo, Egypt |