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p105 and p98 precursor proteins play an active role in NF-kappa B -mediated signal transduction .
 NF-kappa B, p98, p105, precursor proteins
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:
 NF-kappa B, p98, p105, precursor proteins