1. From the Department of Angiogenesis and Cardiovascular Pathology, Max Delbrück Center for Molecular Medicine, Berlin, Germany (Q.J., M.L.-Q., D.L., Y.S., F.l.N.); University of Muenster, Muenster, Germany (C.H., W.H.); Max Planck Institute for Molecular Biomedicine, Muenster, Germany (W.H.); and Center for Stroke Research Berlin, Charite, Berlin, Germany (F.l.N.).