11915
When introduced into interleukin 3 ( IL-3 )-dependent mouse pro-B lymphocytes , E2A-HLF prevents apoptosis induced by growth factor deprivation , suggesting that IL-3 mediates cell survival through activation of a transcription factor whose activity can be constitutively replaced by the chimeric oncoprotein .
 ( protein: interleukin 3, None) , ( protein: transcription factor, None) , ( protein: E2A-HLF, None) , ( protein: chimeric oncoprotein, None) , ( protein: IL-3, None) , ( protein: growth factor, None) , ( cell type: pro-B lymphocytes, None) , ( protein: IL-3, 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: interleukin 3, None) , ( protein: transcription factor, None) , ( protein: E2A-HLF, None) , ( protein: chimeric oncoprotein, None) , ( protein: IL-3, None) , ( protein: growth factor, None) , ( cell type: pro-B lymphocytes, None) , ( protein: IL-3, None) 