Stage-dependent pathology of EAE induced with MOG92-106. (a, c) In RR-EAE, intense CD3+ T cell infiltration was observed around vessels (v) with mild demyelination. (b, d) In progressive EAE, T cell infiltration was sparse around vessels (v), despite large areas of demyelination (arrowheads). UV irradiation can alter the disease course from RR-EAE to SP-EAE in SJL/J mice sensitized with MOG92-106. PP-EAE was induced in A.SW mice sensitized with MOG92-106. (a, b) Luxol fast blue stain. (c, d) CD3 immunohistochemistry. Magnification × 70.