8594
Early B-cell factor ( EBF ) is a transcription factor suggested as essential for early B-lymphocyte development by findings in mice where the coding gene has been inactivated by homologous disruption .
 ( protein: EBF, None) , ( protein: transcription factor, None) , ( protein: Early B-cell factor, None) , ( cell type: B-lymphocyte, 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: transcription factor, None) , ( protein: Early B-cell factor, None) , ( cell type: B-lymphocyte, None) 