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In this article, we argue that the presentation of self-antigen by DC and by autoantibody-producing B cells is critical for the perpetuation of the autoimmune response .
 ( cell type: B cells, None) , ( protein: self-antigen, None) , ( cell type: autoantibody-producing B cells, None) , ( cell type: DC, 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:
 ( cell type: B cells, None) , ( protein: self-antigen, None) , ( cell type: autoantibody-producing B cells, None) , ( cell type: DC, None) 