To this end, the three NB cell lines tested above, i.e. SH-SY5Y, SK-N-BE(2) and SK-N-BE(2)c, were evaluated by RT-PCR for the expression of the well-known tumor-antigen coding genes MAGE-A1, MAGE-A3, MART-1 and NY-ESO-1. The gene discussed is MAGEA1; the disease is neuroblastoma.