13762
A novel function of Stat1 and Stat3 proteins in erythropoietin -induced erythroid differentiation of a human leukemia cell line .
 ( protein: Stat3, None) , ( protein: erythropoietin, None) , ( protein: Stat1, None) , ( cell line: human leukemia cell line, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: Stat3, None) , ( protein: erythropoietin, None) , ( protein: Stat1, None) , ( cell line: human leukemia cell line, None) 