However , it has been recently reported that the NH2 regulatory domain is sufficient to mediate CD4 accessory function .
however , it has been recently reported that the nh2 regulatory domain is sufficient to mediate cd4 accessory function .
O O O O O O O O O B-protein_molecule B-protein_domain_or_region I-protein_domain_or_region O O O O B-protein_molecule O O O