Professor, German virologist, whose research has focused on retroviruses, in particular the human immunodeficiency virus. From 1993 to 2008, she was a Professor and Director of the Institute of medical Virology at the University of Zurich. He is a member of the European organization of molecular biology. Heisenberg fellow of the German science Foundation. The Professor is well known for her discovery of ribonuclease H activity of reverse transcriptase, which is necessary for virus proliferation. Her work in this area led to the development of a DNA-based candidate HIV vaccine, which she conducted clinical trials on.