11999
Supershift with specific antibodies to NF-kappa B subunits confirmed that the inducible retarded bands observed in the EMSA and p65-p50 heterodimer of the NF-kappa B /Rel protein .
 ( protein: p65-p50 heterodimer, None) , ( protein: NF-kappa B /Rel protein, None) , ( protein: NF-kappa B, None) , ( protein: NF-kappa B subunits, 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: p65-p50 heterodimer, None) , ( protein: NF-kappa B /Rel protein, None) , ( protein: NF-kappa B, None) , ( protein: NF-kappa B subunits, None) 