6454
Rheumatoid arthritis synovial tissue was examined and compared with osteoarthritis tissue for the presence of the nuclear transcription factor C/EBP beta ( NF-IL-6 ) .
 ( protein: C/EBP beta, None) , ( protein: NF-IL-6, None) , ( protein: nuclear transcription factor C/EBP beta ( NF-IL-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: C/EBP beta, None) , ( protein: NF-IL-6, None) , ( protein: nuclear transcription factor C/EBP beta ( NF-IL-6 ), None) 