In late stages of erythroid maturation , GPA was upregulated , whereas CD34 , c-kit , PU . 1 , and GATA-2 were barely or not detected .
in late stages of erythroid maturation , gpa was upregulated , whereas cd34 , c-kit , pu . 1 , and gata-2 were barely or not detected .
O O O O O O O B-protein_molecule O O O O B-protein_molecule O B-protein_molecule O B-protein_molecule I-protein_molecule I-protein_molecule O O B-protein_molecule O O O O O O