5848
Moreover, we provide evidence that TCR/ CD3 and IL-2 induce Stat3 activation via distinct signaling pathways .
 ( protein: IL-2, None) , ( protein: CD3, None) , ( protein: TCR/ CD3, None) , ( protein: Stat3, 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: IL-2, None) , ( protein: CD3, None) , ( protein: TCR/ CD3, None) , ( protein: Stat3, None) 