We therefore compared the turnover of I kappa B alpha and I kappa B beta in mature B cells and HeLa cells .
we therefore compared the turnover of i kappa b alpha and i kappa b beta in mature b cells and hela cells .
O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O B-cell_type I-cell_type I-cell_type O B-cell_line I-cell_line O