4362
Electrophoretic mobility shift assay ( EMSA ) and supershift assay using an NF-kappa B binding sequence from the kappa light chain as a probe, revealed that both p65 ( RelA ) and c-Rel were present in CD40 -stimulated B cells .
 ( protein: c-Rel, None) , ( protein: NF-kappa B, None) , ( protein: CD40, None) , ( DNA: NF-kappa B binding sequence, None) , ( protein: RelA, None) , ( cell type: CD40 -stimulated B cells, None) , ( protein: p65, None) , ( protein: kappa light chain, 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-Rel, None) , ( protein: NF-kappa B, None) , ( protein: CD40, None) , ( DNA: NF-kappa B binding sequence, None) , ( protein: RelA, None) , ( cell type: CD40 -stimulated B cells, None) , ( protein: p65, None) , ( protein: kappa light chain, None) 