6327
This prompted us to investigate the expression of the BCL-6 protein in Hodgkin's disease ( HD ), focusing on the nodular lymphocyte predominance subtype ( NLPHD ), which differs from classical HD by virtue of the B-cell nature of the malignant cell population (so-called L&H cells ) and its relationship with germinal centers.
 ( protein: BCL-6, None) , ( cell type: L&H cells, None) , ( protein: BCL-6 protein, None) , ( cell type: malignant cell population, 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) , ( cell type: L&H cells, None) , ( protein: BCL-6 protein, None) , ( cell type: malignant cell population, None) 