Human IL-2 secretion by human neuroblastoma cell lines reached a peak 24–48 h post-transfection in both cell lines, with IMR-32 cells expressing 349.7±5.5 ng 24 h−1 10−6 cells (Figure 1B) and SHSY5Y cells 14.3±1.25 ng 24 h−1 10−6 cells (Figure 1D). This evidence concerns the gene IL2 and neuroblastoma.