1. Institute of Human Anatomy, Department of Experimental Medicine, University of Genova, Italy
2. T Cell Apoptosis Unit, Laboratory of Cellular and Molecular Immunology, NIAID, National Institute of Health, Bethesda, USA
3. INFM and Department of Physics, University of Genova, Italy
4. Institute of General Pathology, Department of Experimental Medicine, University of Genova, Italy
5. Department of Microbiology and Immunology, Albert Einstein College of Medicine, NY, USA
6. Department of Experimental Medicine, University of Bologna, Italy
7. Department of Neuroscience, University of Genova, Italy