In contrast , neither E ( gre ) nor EA/S motifs contributed pronouncedly to Akv MLV transcription in NIH 3T3 cells lacking DNA-binding ALF1 or HEB and E2A proteins .
in contrast , neither e ( gre ) nor ea/s motifs contributed pronouncedly to akv mlv transcription in nih 3t3 cells lacking dna-binding alf1 or heb and e2a proteins .
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 B-DNA_domain_or_region O O O O B-virus B-virus O O B-cell_line I-cell_line I-cell_line O O B-protein_complex O B-protein_complex O B-protein_family_or_group I-protein_family_or_group O