8109
In addition, expression of Fli-1 was identified immunohistochemically in megakaryocytes derived from CD34(+) cells treated with the megakaryocyte differentiation and proliferation factor , thrombopoietin .
 ( protein: megakaryocyte differentiation and proliferation factor, None) , ( cell type: CD34(+) cells, None) , ( protein: thrombopoietin, None) , ( protein: Fli-1, None) , ( cell type: megakaryocytes, 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: megakaryocyte differentiation and proliferation factor, None) , ( cell type: CD34(+) cells, None) , ( protein: thrombopoietin, None) , ( protein: Fli-1, None) , ( cell type: megakaryocytes, None) 