CD4 and myeloid sarcoma: In untreated MS patients, the percentages of naïve T cells in CD4+ T cells and Vδ1−Vδ2−Vγ9+ cells in γδ T cells were higher and the percentage of effector memory T cells in CD4+ T cells was lower in RRMS than in PMS (p = 0.002, 0.050, and 0.004, respectively).