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 .
 p65-p50 heterodimer, NF-kappa B /Rel protein, NF-kappa B, NF-kappa B subunits
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 p65-p50 heterodimer, NF-kappa B /Rel protein, NF-kappa B, NF-kappa B subunits