A 2 . 3-kb LCR in the human adenosine deaminase ( ADA ) gene first intron , which controls expression in thymocytes , is composed of a 200-bp enhancer domain and extended flanking sequences that facilitate activation from within chromatin .
a 2 . 3-kb lcr in the human adenosine deaminase ( ada ) gene first intron , which controls expression in thymocytes , is composed of a 200-bp enhancer domain and extended flanking sequences that facilitate activation from within chromatin .
O B-protein_molecule I-protein_molecule I-protein_molecule I-protein_molecule O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-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 O B-cell_type O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O O O O O B-DNA_family_or_group O