Representation of SD and EID groups in some CD4+ and CD8+ T lymphocytes, and CD19+ B lymphocytes subpopulations in RRMS patients under Natalizumab treatment in both first (V1) and second (V2) extractions. Percentage of expression of CD49d in (a) CD8+CD27+ T lymphocytes and (b) CD19+ DN B lymphocytes. Each dot represents the percentage of expression for each marker regarding their parent population (CD4+ or CD8+ T lymphocytes, or CD19+ B lymphocytes populations) in the SD (n = 8) or EID (n = 21) groups. DN, Double Negative; EID, extended interval dosing; NTZ, natalizumab; SD, standard dosing. Ns: p > 0.05, * p < 0.05, ** p < 0.01.