Neutrophils and monocytes express high levels of PU . 1 ( Spi-1 ) but not Spi-B .
neutrophils and monocytes express high levels of pu . 1 ( spi-1 ) but not spi-b .
B-cell_type O B-cell_type O O O O B-protein_molecule I-protein_molecule I-protein_molecule O B-protein_molecule O O O B-protein_molecule O