tokens: When the human epsilon- or beta- globin genes driven by the dominant control region ( DCR ) are introduced into this system , the human epsilon- globin gene , in contrast to the beta- globin gene , is not deregulated by the presence of the DCR and is expressed strictly as an embryonic gene .
folded_tokens: when the human epsilon- or beta- globin genes driven by the dominant control region ( dcr ) are introduced into this system , the human epsilon- globin gene , in contrast to the beta- globin gene , is not deregulated by the presence of the dcr and is expressed strictly as an embryonic gene .
labels: O O O O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O B-DNA_domain_or_region O O O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region B-DNA_family_or_group I-DNA_family_or_group O O O O O B-DNA_domain_or_region B-DNA_family_or_group I-DNA_family_or_group O O O O O O O O O B-DNA_domain_or_region O O O O O O B-DNA_family_or_group I-DNA_family_or_group O