1. INSERM U-836 (Team 6), Rayonnement Synchrotron et Recherche Médicale, Institut des Neurosciences Grenoble (GIN), Université Joseph Fourier UMR-S 836, Grenoble, F-38042, France, Prince of Wales Medical Research Institute and the University of New South Wales, Randwick NSW, 2031, Australia, Institute of Neuropathology, University Hospital, 48149, Münster, Germany, and European Synchrotron Radiation Facility (ESRF), X-ray Imaging Group, ID22 Beamline, BP220, 38043 Grenoble Cedex, France