NDRG2 and neuroblastoma: Moreover, western blot and real-time quantitative RT-PCR indicated lower expression levels of ITLN1 and NDRG2 in subtotal 30 NB specimens and cultured SK-N-SH, SK-N-AS, SH-SY5Y, and SK-N-BE(2) cell lines, than those in normal dorsal ganglia (Figure 6B and C).