Author biography: ass. Prof. Dr. Jürgen Arnhold (visiting scientist) I was born in 1951 in Leipzig, Germany. From 1969 to 1974 I studied biology and biophysics at Moscow State University, Russia, where I got my diploma. From 1974 to 2016, I worked at the Institute of Medical Physics and Biophysics, Medical Faculty, Leipzig University, Germany. Since 2003, I have been an associate professor at this institute. During that time, I was deeply involved in education of students of human medicine, stomatology, pharmacy, biochemistry, and biology in physics. Since 2017, I have has the position of a visiting scientist. My major scientific interests concern the investigation of biochemical and redox properties of heme proteins, involvement of heme proteins in pathobiochemistry and pathophysiology, biological oxidation of halides and thiocyanate, generation of reactive species by immune cells, investigation of the balance between host-derived cytotoxic agents and antagonizing principles, and basic principles of inflammation and disease progression. I am the author and coauthor of more than 220 scientific publications.