NDRG1 and neuroblastoma: In SK-N-SH cells (one of the human neuroblastoma cell lines) expressing NDRG1-S330A (constitutively nonphosphorylated NDRG1; NP-NDRG1), weak and diffusely distributed staining can be observed for each of the adhesion molecules throughout the cytoplasm, including the cell membrane (Figure 14(c), upper panels).