13771
Taken together, our data suggest that Stat1alpha and Stat3 act as negative regulators in EPO -induced erythroid differentiation .
 ( protein: EPO, None) , ( protein: Stat3, None) , ( protein: Stat1alpha, 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: EPO, None) , ( protein: Stat3, None) , ( protein: Stat1alpha, None) 