Interleukin-2 ( IL-2 ) gene expression is controlled transcriptionally by the cooperative activity of specific trans-activating factors that bind to the IL-2 enhancer .
interleukin-2 ( il-2 ) gene expression is controlled transcriptionally by the cooperative activity of specific trans-activating factors that bind to the il-2 enhancer .
B-protein_molecule O B-protein_molecule O O O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O O O O B-protein_molecule O O