Prof. Dr. med. John Ziebuhr Department of Medical Virology Biomedical Research Center Seltersberg (BFS) Justus Liebig University Giessen Schubertstrasse 81 35392 Giessen Tel.: +49 641 99 41200 Fax: +49 641 99 41209 John.Ziebuhr@viro.med.uni-giessen.de