8077
RESULTS: In FH and HIV adenopathy , staining for Bcl-6 revealed densely populated GCs with well-defined and regular GC borders , whereas Bcl-6 + cells were rare in the interfollicular areas .
 ( cell type: Bcl-6 + cells, None) , ( protein: Bcl-6, None) , ( protein: Bcl-6, 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: Bcl-6 + cells, None) , ( protein: Bcl-6, None) , ( protein: Bcl-6, None) 