11021
When challenged with an activating stimulus such as alpha- CD3 or a combination of phorbol ester plus ionophore , the cells are severely compromised in their ability to produce the cytokine interleukin-2 ( IL-2 ).
 ( protein: interleukin-2, None) , ( protein: CD3, None) , ( protein: cytokine, None) , ( protein: IL-2, None) , ( protein: alpha- CD3, 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-2, None) , ( protein: CD3, None) , ( protein: cytokine, None) , ( protein: IL-2, None) , ( protein: alpha- CD3, None) 