1. From the Departments of Diagnostic and Interventional Radiology (C.J., M.G.K., G.A., H.I.), Biochemistry and Molecular Cell Biology (B.F., M.H., P.N., J.H.), and Anatomy and Experimental Morphology (M.H.), University Medical Center Hamburg Eppendorf, Hamburg, Germany; Institute of Physical Chemistry, University of Hamburg, Hamburg, Germany (S.C.S., H.W.); Department of Electron Microscopy and Micro Technology, Heinrich-Pette Institute, Hamburg, Germany (O.T.B., R.R.); Deutsches Elektronen...