In T- and B- cell lines , the E ( gre ) motifs were of major importance for Akv MLV transcriptional activity , while the EA/S motif had some effect .
in t- and b- cell lines , the e ( gre ) motifs were of major importance for akv mlv transcriptional activity , while the ea/s motif had some effect .
O O 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 O O O O O B-virus B-virus O O O O O B-DNA_domain_or_region O O O O O