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By using mutated promoter- PLAP plasmids , we established that these NF-kappa B sites were necessary for induction of TNF-alpha transcription on stimulation with LPS .
 TNF-alpha, PLAP, NF-kappa B sites, NF-kappa B, mutated promoter- PLAP plasmids
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:
 TNF-alpha, PLAP, NF-kappa B sites, NF-kappa B, mutated promoter- PLAP plasmids