Spi-B and PU . 1 are hematopoietic-specific transcription factors that constitute a subfamily of the Ets family of DNA-binding proteins .
spi-b and pu . 1 are hematopoietic-specific transcription factors that constitute a subfamily of the ets family of dna-binding proteins .
B-protein_molecule O B-protein_molecule I-protein_molecule I-protein_molecule O B-protein_family_or_group I-protein_family_or_group I-protein_family_or_group O O O O O O B-protein_family_or_group I-protein_family_or_group O B-protein_family_or_group I-protein_family_or_group O