ACKR3 and neuroblastoma: A low CXCR7 expression (median score of 0.92) was observed in neural cell compartment in 76% of NB primary tumors (PTs), while no CXCR7 expression (all median scores <0.5) was detected in the vascular and stromal compartments of PTs, metastatic and control tissues (Figure 1A, Table 2).