These factors act synergistically to activate transcription , and this synergy is required for transcription of at least several important hematopoietic genes .
these factors act synergistically to activate transcription , and this synergy is required for transcription of at least several important hematopoietic genes .
O O O O O O O O O O O O O O O O O O O O B-DNA_family_or_group I-DNA_family_or_group O