7831
Recently, we have reported that the histogenesis of HD of the general population may be assessed by monitoring the expression pattern of BCL-6 , a transcription factor expressed in germinal center (GC) B cells , and of CD138/syndecan-1 ( syn-1 ), a proteoglycan associated with post-GC, terminal B-cell differentiation .
 ( protein: BCL-6, None) , ( protein: syn-1, None) , ( cell type: B-cell, None) , ( protein: CD138/syndecan-1, None) , ( cell line: germinal center (GC) B cells, None) , ( protein: transcription factor, 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) , ( protein: syn-1, None) , ( cell type: B-cell, None) , ( protein: CD138/syndecan-1, None) , ( cell line: germinal center (GC) B cells, None) , ( protein: transcription factor, None) 