An erythroid specific enhancer upstream to the gene encoding the cell-type specific transcription factor GATA-1 .
an erythroid specific enhancer upstream to the gene encoding the cell-type specific transcription factor gata-1 .
O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O O O B-protein_domain_or_region I-protein_domain_or_region B-protein_family_or_group I-protein_family_or_group B-protein_molecule O