14779
The results were compared to those obtained with the parental granulocyte-macrophage colony-stimulating factor ( GM-CSF )-dependent cell line , UT-7 , which has a predominantly megakaryoblastic phenotype and is unable to proliferate continuously in the presence of Epo .
 ( protein: Epo, None) , ( cell line: parental granulocyte-macrophage colony-stimulating factor ( GM-CSF )-dependent cell line, None) , ( protein: granulocyte-macrophage colony-stimulating factor, None) , ( protein: GM-CSF, None) , ( cell line: UT-7, 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) , ( cell line: parental granulocyte-macrophage colony-stimulating factor ( GM-CSF )-dependent cell line, None) , ( protein: granulocyte-macrophage colony-stimulating factor, None) , ( protein: GM-CSF, None) , ( cell line: UT-7, None) 