Uninduced or Sendai virus induced HeLa extracts were used to examine transcription in vitro using a series of IFN beta promoter deletions .
uninduced or sendai virus induced hela extracts were used to examine transcription in vitro using a series of ifn beta promoter deletions .
B-cell_component O B-virus I-virus O B-cell_component I-cell_component O O O O B-other_name O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O