8071
Interfollicular cells are negative for Bcl-6 protein , except for rare CD3+/CD4+ T cells .
 ( cell type: CD3+/CD4+ T cells, None) , ( protein: Bcl-6, None) , ( protein: Bcl-6 protein, 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: CD3+/CD4+ T cells, None) , ( protein: Bcl-6, None) , ( protein: Bcl-6 protein, None) 