CD4 and myeloid sarcoma: In support of PBM, two studies from the same authors showed benefits of PBM in suppressing IFN-γ and increasing IL-10 production by MS patient-derived peripheral blood mononuclear cells (PBMCs) and CD4+ T cells as well as reduced levels of nitrite that correlated with increased production of IL-10 and reduced production of IFN-γ (34).