tokens: Avian erythroblasts expressing the activated mouse EpoR ( R129C ) differentiated into erythrocytes in response to hEpo .
folded_tokens: avian erythroblasts expressing the activated mouse epor ( r129c ) differentiated into erythrocytes in response to hepo .
labels: B-cell_type I-cell_type O O B-protein_molecule I-protein_molecule B-protein_molecule O O O O O B-cell_type O O O B-protein_molecule O