The interleukin-2 ( IL-2 ) promoter consists of several independent T cell receptor ( TcR ) responsive elements .
the interleukin-2 ( il-2 ) promoter consists of several independent t cell receptor ( tcr ) responsive elements .
O B-protein_molecule O B-protein_molecule O O O O O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O B-protein_family_or_group O O O O