When transfected into K562 cells , which express zeta-globin , comparable amounts of activity were obtained from the -557 and -417 zeta- luciferase constructs and the alpha- luciferase constructs when no enhancers or the alpha-globin locus enhancers were used .
when transfected into k562 cells , which express zeta-globin , comparable amounts of activity were obtained from the -557 and -417 zeta- luciferase constructs and the alpha- luciferase constructs when no enhancers or the alpha-globin locus enhancers were used .
O O O B-cell_line I-cell_line O O O B-protein_family_or_group O O O O O O O O O B-DNA_molecule I-DNA_molecule I-DNA_molecule I-DNA_molecule B-protein_molecule O O O B-DNA_molecule B-protein_molecule O O O B-DNA_family_or_group O O B-DNA_domain_or_region I-DNA_domain_or_region B-DNA_family_or_group O O O