Our investigations have focused on localizing cis-elements responsible for the down regulation of the adult beta-like globin genes ( delta and beta ) in immature , or primitive erythroid tissues .
our investigations have focused on localizing cis-elements responsible for the down regulation of the adult beta-like globin genes ( delta and beta ) in immature , or primitive erythroid tissues .
O O O O O O B-DNA_family_or_group O O O O O O O B-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group I-DNA_family_or_group O B-DNA_domain_or_region O B-DNA_domain_or_region O O O O O O O O O