TPA-GR synergism was determined to have occurred at the GR -responsive element ( GRE ) level by functional analysis of deletion mutants or synthetic GRE oligonucleotides driving chloramphenicol acetyl-transferase expression .
tpa-gr synergism was determined to have occurred at the gr -responsive element ( gre ) level by functional analysis of deletion mutants or synthetic gre oligonucleotides driving chloramphenicol acetyl-transferase expression .
B-other_name I-other_name O O O O O O O B-protein_family_or_group 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 B-DNA_family_or_group B-DNA_domain_or_region O O B-protein_molecule I-protein_molecule O O