Tyrosine phosphorylation STAT1 or STAT3 was not detected in human erythroid precursors after stimulation with erythropoietin .
tyrosine phosphorylation stat1 or stat3 was not detected in human erythroid precursors after stimulation with erythropoietin .
B-amino_acid_monomer O B-protein_molecule O B-protein_molecule O O O O B-cell_type I-cell_type I-cell_type O O O B-protein_molecule O