12001
Elf-2 , a rhombotin-2 binding ets transcription factor : discovery and potential role in T cell leukemia .
 ( protein: rhombotin-2 binding ets transcription factor, None) , ( protein: Elf-2, 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: rhombotin-2 binding ets transcription factor, None) , ( protein: Elf-2, None) 