3633
E3 , a hematopoietic-specific transcript directly regulated by the retinoic acid receptor alpha .
 ( protein: E3, None) , ( protein: hematopoietic-specific transcript, None) , ( protein: retinoic acid receptor alpha, 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: E3, None) , ( protein: hematopoietic-specific transcript, None) , ( protein: retinoic acid receptor alpha, None) 