Third , TCF-1 bound specifically to a functional T cell-specific element in the T cell receptor alpha ( TCR-alpha ) enhancer .
third , tcf-1 bound specifically to a functional t cell-specific element in the t cell receptor alpha ( tcr-alpha ) enhancer .
O O B-protein_molecule O O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region 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 I-DNA_domain_or_region O