12658
In non-rheumatoid arthritis, binding of NF-kappa B in synovial T cells was exclusively mediated by p50/p50 homodimers .
 ( protein: p50/p50 homodimers, None) , ( protein: NF-kappa B, None) , ( cell type: synovial T cells, 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: p50/p50 homodimers, None) , ( protein: NF-kappa B, None) , ( cell type: synovial T cells, None) 