tokens: Restoration of terminal differentiation in the mouse erythroleukemia ( MEL ) cells requires a decline in the level of PU . 1 , indicating that PU . 1 can block erythroid differentiation .
folded_tokens: restoration of terminal differentiation in the mouse erythroleukemia ( mel ) cells requires a decline in the level of pu . 1 , indicating that pu . 1 can block erythroid differentiation .
labels: O O B-other_name I-other_name O O B-cell_line I-cell_line I-cell_line B-cell_line O O O O O O O O O B-protein_molecule I-protein_molecule I-protein_molecule O O O B-protein_molecule I-protein_molecule I-protein_molecule O O B-other_name I-other_name O