tokens: A 2-4-fold increase in IFN-beta promoter transcription was observed in Sendai virus induced extracts , and deletion of PRDI and PRDII elements decreased this induced level of transcription .
folded_tokens: a 2-4-fold increase in ifn-beta promoter transcription was observed in sendai virus induced extracts , and deletion of prdi and prdii elements decreased this induced level of transcription .
labels: O O O O B-DNA_domain_or_region I-DNA_domain_or_region B-other_name O O O B-virus I-virus O O O O O O B-DNA_domain_or_region O B-DNA_domain_or_region O O O O O O B-other_name O