TGFB1 and neuroblastoma: Given the key role of TGFβ in TME remodeling in human NB [25, 38, 43], and its expression level in both 975A2 and 9464D tumor models (Fig. 1A), we evaluated the effect of anti-TGFβ in terms of immune cell recall in 975A2-bearing mice (Fig. 3A and Supplementary Fig. S4).