MOG and graft versus host disease: Although plasma Mog concentration was eliminated, it did not lead to the prompt elevation of Treg levels in peripheral blood, and the clinical responses of GVHD were limited to partial remission, suggesting that recovery of donor-derived Tregs in the acute phase after HSCT is multifactorial, and the single procedure of PE-based Mog depletion does not necessarily warrant the quick restoration of Treg homeostasis.