Co-stimulation of T-lymphocytes by T-cell receptor ( TcR ) occupancy and activation of the CD28 surface molecule results in enhanced proliferation and interleukin 2 ( IL-2 ) production .
co-stimulation of t-lymphocytes by t-cell receptor ( tcr ) occupancy and activation of the cd28 surface molecule results in enhanced proliferation and interleukin 2 ( il-2 ) production .
O O B-cell_type O B-protein_family_or_group I-protein_family_or_group O B-protein_family_or_group O O O O O O B-protein_molecule O O O O O B-other_name O B-protein_molecule I-protein_molecule O B-protein_molecule O O O