Furthermore , the results obtained with TNF alpha proved that NF-kappa B activation was not sufficient for induction of neuroblastoma differentiation .
furthermore , the results obtained with tnf alpha proved that nf-kappa b activation was not sufficient for induction of neuroblastoma differentiation .
O O O O O O B-protein_molecule I-protein_molecule O O B-protein_molecule I-protein_molecule O O O O O O O B-cell_type O O