RTN4R and neuroblastoma: A recombinant plasmid, pcDNAGMCSF-NgR-PirB was constructed. The recombinant plasmid then formed a composite nucleic acid vaccine with liposome, and the effects of the antisera on neurite outgrowth of human neuroblastoma SH-SY5Y cells, axonal regeneration and functional recovery in spinal cord injured rats were further investigated