Affiliation: | 1. Department of Cell and Developmental Biology, Max Planck Institute for Molecular Biomedicine, Röntgenstraße 20, D-48149 Münster, Germany;2. Department of Genetics, Center for Stem Cell and Regenerative Medicine, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA;3. Medical Faculty, University of Münster, Domagkstr. 3, D-48149 Münster, Germany |