14969
Early B-cell factor ( EBF ) was identified previously as a tissue-specific and differentiation stage-specific DNA-binding protein that participates in the regulation of the pre-B and B lymphocyte-specific mb-1 gene .
 ( protein: EBF, None) , ( protein: DNA-binding protein, None) , ( protein: Early B-cell 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: EBF, None) , ( protein: DNA-binding protein, None) , ( protein: Early B-cell factor, None) 