13769
Dominant negative forms of Stat1alpha or Stat3 promoted the EPO -induced erythroid differentiation of UT-7/GM cells , even in the presence of granulocyte-macrophage colony-stimulating factor , although this cytokine never induced erythroid differentiation of the parent UT-7/GM cells with or without EPO .
 ( protein: Stat1alpha, None) , ( protein: EPO, None) , ( cell line: parent UT-7/GM cells, None) , ( protein: EPO, None) , ( cell line: UT-7/GM cells, None) , ( protein: granulocyte-macrophage colony-stimulating factor, None) , ( protein: Stat3, 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: Stat1alpha, None) , ( protein: EPO, None) , ( cell line: parent UT-7/GM cells, None) , ( protein: EPO, None) , ( cell line: UT-7/GM cells, None) , ( protein: granulocyte-macrophage colony-stimulating factor, None) , ( protein: Stat3, None) 