We found that in vitro NB cells expressed a low quantity of VN as a small cytoplasmic dot drops pattern and that the in vivo experiments revealed a high amount of VN as a dense cytoplasmic pattern with no differences in VN staining pattern or tumor growth rate between RAG1−/− VN+/+ and RAG1−/− VN−/− mice. The gene discussed is RAG1; the disease is neuroblastoma.