The inhibitory effect exerted by anti- CD28 was observed at the level of DNA binding as well as in functional reporter-gene assays .
the inhibitory effect exerted by anti- cd28 was observed at the level of dna binding as well as in functional reporter-gene assays .
O O O O O B-protein_family_or_group B-protein_molecule O O O O O O O O O O O O O B-other_name I-other_name O