12863
Thus, the block of apoptosis imposed by E2A-HLF in pro-B lymphocytes depends critically on the transactivating regions of E2A .
 ( protein: transactivating regions, None) , ( protein: E2A, None) , ( cell type: pro-B lymphocytes, None) , ( protein: E2A-HLF, 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: transactivating regions, None) , ( protein: E2A, None) , ( cell type: pro-B lymphocytes, None) , ( protein: E2A-HLF, None) 