1. Department of Neuroanatomy, Faculty of Medicine; LMU München University; München 80336 Germany
2. Institute of Neuroanatomy, Faculty of Medicine, RWTH Aachen University; Aachen D-52074 Germany
3. Department of Pathology; VU University Medical Centre; Amsterdam The Netherlands
4. Barts and The London School of Medicine and Dentistry, Neuroimmunology Unit; , Queen Mary University of London, Neuroscience Centre, Blizard Institute of Cell and Molecular Science; London UK