In Th2 cells , IL-4 gene expression is tightly controlled at the level of transcription by the coordinated binding of multiple transcription factors to regulatory elements in the proximal promoter region .
in th2 cells , il-4 gene expression is tightly controlled at the level of transcription by the coordinated binding of multiple transcription factors to regulatory elements in the proximal promoter region .
O O O O B-protein_molecule O O O O O O O O O O O O O O O O B-protein_family_or_group I-protein_family_or_group O O O O O O B-DNA_domain_or_region I-DNA_domain_or_region O