The TCF-1 alpha binding site was also required for TCR alpha enhancer activity in transcriptionally active extracts from Jurkat but not HeLa cells , confirming that TCF-1 alpha is a T-cell-specific transcription factor .
the tcf-1 alpha binding site was also required for tcr alpha enhancer activity in transcriptionally active extracts from jurkat but not hela cells , confirming that tcf-1 alpha is a t-cell-specific transcription factor .
O B-protein_molecule I-protein_molecule O O O O O O B-protein_family_or_group O O O O B-other_name I-other_name I-other_name O B-cell_line O O B-cell_line I-cell_line O O O B-protein_molecule I-protein_molecule O O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O