One of the cDNA fragments expressed specifically in CD3 -and CD28 -activated T cells was designated RP1 .
one of the cdna fragments expressed specifically in cd3 -and cd28 -activated t cells was designated rp1 .
O O O B-DNA_family_or_group I-DNA_family_or_group O O O B-protein_molecule O B-protein_molecule B-cell_type B-cell_type I-cell_type O O B-DNA_domain_or_region O