The degree of infiltrating B cells expressed as mean cell counts of each cell population/1000 μm2 (SD) was 9.6 (11.9) for TDL cases, 4.7 (8.2) for MOG-antibody-associated disease with extensive lesions, 12.4 (12.7) for ADEM cases, 4.0 (23.5) for MS (chronic phase) and 4.1 (6.3) for NMOSD (50). This evidence concerns the gene MOG and myeloid sarcoma.