No significant difference in size of lung metastasis, or in bone or lymph node metastasis was observed in the different CXCR7 transductants compared with control MTLn3 JP or MTLn3 CXCR4 (data not shown) [see Additional data file 10]. The gene discussed is CXCR4; the disease is metastatic malignant neoplasm in the lymph nodes.