12887
A regulatory element in the CD95 ( APO-1/Fas ) ligand promoter is essential for responsiveness to TCR -mediated activation .
 TCR, APO-1/Fas, regulatory element, CD95, CD95 ( APO-1/Fas ) ligand promoter
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:
 TCR, APO-1/Fas, regulatory element, CD95, CD95 ( APO-1/Fas ) ligand promoter