tokens: We recently determined that erythropoietin ( EPO ) activates 3 members of the signal transducer and activator of transcription ( STAT ) family , Stat1alpha , Stat3 , and Stat5 , in the human EPO -dependent cell lines , UT-7 and UT-7/ EPO ( Kirito et al , J Biol Chem 272 : 16507 , 1997 ) .
folded_tokens: we recently determined that erythropoietin ( epo ) activates 3 members of the signal transducer and activator of transcription ( stat ) family , stat1alpha , stat3 , and stat5 , in the human epo -dependent cell lines , ut-7 and ut-7/ epo ( kirito et al , j biol chem 272 : 16507 , 1997 ) .
labels: O O O O B-protein_complex O B-protein_complex O O O O O O O O O O O O O O O O O B-protein_molecule O B-protein_molecule O O B-protein_molecule O O O B-cell_line B-protein_complex O O O O B-cell_line O B-cell_line B-protein_complex O O O O O O O O O O O O O O O