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NF-kappa B , a transcription factor controlling the expression of genes involved in cell activation and growth control , has been shown to be activated by LMP-1 .
 LMP-1, NF-kappa B, genes, transcription factor
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:
 LMP-1, NF-kappa B, genes, transcription factor