13256
Activation of E2F -mediated transcription by human T-cell leukemia virus type I Tax protein in a p16(INK4A)-negative T-cell line .
 ( protein: E2F, None) , ( cell line: p16(INK4A)-negative T-cell line, None) , ( protein: human T-cell leukemia virus type I Tax protein, 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: E2F, None) , ( cell line: p16(INK4A)-negative T-cell line, None) , ( protein: human T-cell leukemia virus type I Tax protein, None) 