Biphasic control of NF-kappa B activation induced by the triggering of HLA-DR antigens expressed on B cells .
biphasic control of nf-kappa b activation induced by the triggering of hla-dr antigens expressed on b cells .
O O O B-protein_complex I-protein_complex O O O O O O B-protein_family_or_group I-protein_family_or_group O O B-cell_type I-cell_type O