8074
MATERIALS AND METHODS: Formalin-fixed paraffin sections were used for immunostaining of Bcl-6 .
 ( 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:
 ( protein: Bcl-6, None) 