B-Cell Enrichment and Epstein-Barr Virus Infection in Inflammatory Cortical Lesions in Secondary Progressive Multiple Sclerosis - Magliozzi,R; Serafini,B; Rosicarelli,B; Chiappetta,G; Veroni,C; Reynolds,R; Aloisi,F (JOURNAL OF NEUROPATHOLOGY AND EXPERIMENTAL NEUROLOGY, 2013)