| Affiliation: | 1. Department of Pharmacognosy, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria;2. Department of Infectious Microbiology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria;3. Department of Medical Chemistry and Biochemistry, Medical University of Sofia, Sofia, Bulgaria;4. Botany Department, Faculty of Science, University of Khartoum, Sudan;5. Department of Pharmacology, pharmacotherapy and toxicology, Faculty of Pharmacy, Medical University of Sofia, Sofia, Bulgaria |
