Expression of the IL-2 gene requires activation of T cells through stimulation of the TCR and costimulation through accessory receptors .
expression of the il-2 gene requires activation of t cells through stimulation of the tcr and costimulation through accessory receptors .
O O O B-protein_molecule O O O O B-cell_type I-cell_type O O O O B-protein_molecule O O O B-protein_family_or_group I-protein_family_or_group O