In vitro transcription assays showed that Tax was able to significantly increase the transcriptional activity of a template containing the -257 to +74 region of the c-sis/PDGF-B promoter .
in vitro transcription assays showed that tax was able to significantly increase the transcriptional activity of a template containing the -257 to +74 region of the c-sis/pdgf-b promoter .
B-other_name I-other_name I-other_name I-other_name O O B-protein_molecule O O O O O O B-other_name I-other_name 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 O B-protein_molecule O O