13253
CD2 -mediated interleukin-2 production occurs via activation of Jun kinase in cell lines lacking p56 .
 ( protein: Jun kinase, None) , ( protein: p56, None) , ( protein: interleukin-2, None) , ( protein: CD2, 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: Jun kinase, None) , ( protein: p56, None) , ( protein: interleukin-2, None) , ( protein: CD2, None) 