Author of Immunmodulatory Agents from Plants (Birkhauser Verlag, Basel, 1999), Dr. Hildebert Wagner has studied Pharmacy since 1950. He is the author of 7 other books including: Plant Drug Analysis (Springer Verlag Heidelber, 1996), and Drugs and Drug Constituents (Wissenschaftliche Verlagsgesellschaft Stuttgart, 1998), as well as authoring over 900 other scientific publications. Dr. Wagner was made a Full Professor of Pharmacognosy in 1965, and later served as Director of the Institute of Pharmaceutical Biology in Munich until 1999. He has been distinguished by many international scientific institutions including the Universities of Ohio, Budapest and Debrecen, Dijon, and Helsinki for his work in Pharmacy. Dr. Wagner sits on advisory/editorial boards for Phytochemistry, the Journal of Ethnopharmacology, the Journal of Natural Products, as well as serving as Editor for the International Journal of Phytomedicine.