EML1 and neuroblastoma: However, consistent with an Eml1 overexpression phenotype also decreasing MT polymerization observed in Neuroblastoma-2A (N2A) cells (Supplementary Fig. S1b–d), MT growth rate was still lower in EGFP + HeCo progenitors after Eml1 transfection, showing no significant difference compared to mutant progenitors transfected with the control vector pBLBP-EGFP (Supplementary Fig. S1e,f).