IL4 and neuroblastoma: As shown in Fig. 3a, b, CXCR5+ γδT cells in NB patients produced more IL-4 and IL-10 than those in healthy controls (IL-4, 3.4% ± 0.6 vs 10.5% ± 1.2, p < 0.001, Fig. 3a; IL-10, 5.6% ± 1 vs 11.3% ± 1.8, p < 0.05, Fig. 3b).