9218
Here we identify the cell cycle regulator E2F as an IL-2 target in T lymphocytes and PI3K as the critical signaling pathway .
 ( protein: PI3K, None) , ( protein: E2F, None) , ( protein: cell cycle regulator, None) , ( cell type: lymphocytes, None) , ( protein: IL-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: PI3K, None) , ( protein: E2F, None) , ( protein: cell cycle regulator, None) , ( cell type: lymphocytes, None) , ( protein: IL-2, None) 