CTLA-4 engagement by mAbs inhibits , while CD28 enhances , IL-2 production and proliferation upon T cell activation .
ctla-4 engagement by mabs inhibits , while cd28 enhances , il-2 production and proliferation upon t cell activation .
B-protein_molecule O O B-protein_family_or_group O O O B-protein_molecule O O B-protein_molecule O O B-other_name O B-other_name I-other_name I-other_name O