Over a 72-hr period of activation , the expression of the 50-kDa NF-kappa B , p50 , and its precursor , p105 , was increased progressively .
over a 72-hr period of activation , the expression of the 50-kda nf-kappa b , p50 , and its precursor , p105 , was increased progressively .
O O O O O O O O O O O B-protein_subunit I-protein_subunit I-protein_subunit O B-protein_subunit O O O O O B-protein_subunit O O O O O