IL15 and diffuse large B-cell lymphoma: There was asignificant increase in the percentage of NKG2D+ NK cellsin the presence of plasma-derived exosome of refractory/relapsed DLBCL patients plus IL-2/IL-15 compared tothe absence of exosomes in refractory/relapsed DLBCLpatients (P=0.011) and healthy donors (P=0.028).