8331
However, AML1/ETO can also synergize with the transcription factor AML1 to enhance the activity of the M-CSF receptor promoter .
 ( protein: AML1/ETO, None) , ( protein: AML1, None) , ( DNA: M-CSF receptor promoter, None) , ( protein: transcription factor, 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: AML1/ETO, None) , ( protein: AML1, None) , ( DNA: M-CSF receptor promoter, None) , ( protein: transcription factor, None) 