Eberhard Teuscher, former Professor for Pharmaceutical Biology at the University of Greifswald, Germany, and former Dean of the Faculty for Natural Sciences. Main fields of his research work were secondary metabolism of fungi, especially of ergot, and of higher plants, the mode of action of essential oils, and pharmacological investigations of the effects of natural compounds on in-vitro cultivated human and animal cells. He is the author of numerous textbooks, monographs and about 150 scientific papers. His books on "Culinary Herbs, Spices, Spice Mixtures and Their Essential Oils" awarded the James A. Duke Award of the American Botanical Society. Ulrike Lindequist, former Professor for Pharmaceutical Biology at the University of Greifswald, Germany, and from 1992 till March 2016 Head of the Department for Pharmaceutical Biology at the Institute for Pharmacy of this University. She became an emeritus professor in Aprile, 2016. Her research focused on isolation, chemistry, pharmacology, and toxicology of natural compounds from plants, microorganisms and mushrooms, quality, pharmacology and applicability of medicinal mushrooms, marine biotechnology and plasma medicine. She has published about 300 scientific papers and several books and monographs. Books published jointly by the two authors include „Biogene Arzneimittel", 8th edition in 2020, and „Biogene Gifte", 3rd edition in 2010.