4350
Pb -induced activation of NF-kappa B is blocked by antibodies for p65 and p50 subunits but not cRel , indicating that the p65:p50 heterodimer ( NF-kappa B ) is involved.
 ( protein: antibodies, None) , ( protein: NF-kappa B, None) , ( protein: p50, None) , ( protein: p65, None) , ( protein: cRel, None) , ( protein: p65:p50 heterodimer, None) , ( protein: NF-kappa B, 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: antibodies, None) , ( protein: NF-kappa B, None) , ( protein: p50, None) , ( protein: p65, None) , ( protein: cRel, None) , ( protein: p65:p50 heterodimer, None) , ( protein: NF-kappa B, None) 