OUTLINE: Autologous or partially HLA-matched allogeneic neuroblastoma cells are transduced with a human gene for interleukin-2 production. Patients receive subcutaneous injections of the gene-modified cells on days 1 and 8, with the second injection containing 10 times more cells than the first injection. After a 3-4 week rest, stable and responding patients may receive additional weekly injections at the second dose. Cohorts of 3-6 patients will be entered at increasing cell doses until the maximum tolerated dose is estimated. Multiple injection sites may be used at the higher cell-dose levels. Patients are followed every week for 6 weeks, every other week for 6 weeks, and monthly for 1 year. Additional visits may be required as clinically indicated.