The transcriptional activity of the IL-2 promoter requires T-cell costimulation delivered by the TCR and the auxiliary receptor CD28 .
the transcriptional activity of the il-2 promoter requires t-cell costimulation delivered by the tcr and the auxiliary receptor cd28 .
O B-other_name I-other_name O O B-protein_molecule O O B-cell_type O O O O B-protein_molecule O O B-protein_molecule I-protein_molecule I-protein_molecule O