12760
CD27 /CD70 interaction enhanced B cell proliferation in the presence of IL-4 or IL-4 plus anti-CD40 .
 ( protein: IL-4, None) , ( protein: IL-4, None) , ( cell type: B cell, None) , ( protein: CD27, None) , ( protein: anti-CD40, 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-4, None) , ( protein: IL-4, None) , ( cell type: B cell, None) , ( protein: CD27, None) , ( protein: anti-CD40, None) 