Immunoprecipitation experiments failed to demonstrate an association between nuclear I ( kappa ) B ( alpha ) and NF-kappaB proteins .
immunoprecipitation experiments failed to demonstrate an association between nuclear i ( kappa ) b ( alpha ) and nf-kappab proteins .
O O O O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O B-protein_complex O O