Furthermore , in vitro mutagenesis experiments demonstrated that inducible interleukin-2 enhancer function requires the presence of either EBS1 or EBS2 .
furthermore , in vitro mutagenesis experiments demonstrated that inducible interleukin-2 enhancer function requires the presence of either ebs1 or ebs2 .
O O O O O O O O B-other_name B-DNA_domain_or_region I-DNA_domain_or_region O O O O O O B-DNA_substructure O B-DNA_domain_or_region O