BM-infiltrating NB cells express a broad range of chemokine receptors, including CCR1, CCR5, CCR6, CCR9, CXCR1, CXCR2, CXCR3, CXCR4, CXCR5 and CXCR6 [37]. This evidence concerns the gene CXCR5 and neuroblastoma.