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The transcription factor NF-kappaB has been shown to play a role in protecting cells against death mediated by TNF We show here that NF-kappaB also has a role in regulating Fas / APO-1 / CD95 -mediated death , a major pathway of peripheral T cell death .
 NF-kappaB, transcription factor, Fas, APO-1, NF-kappaB, CD95, peripheral T cell, TNF
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-kappaB, transcription factor, Fas, APO-1, NF-kappaB, CD95, peripheral T cell, TNF