6637
NF-kappa B is involved in the transcriptional control of various genes that act as extrinsic and intrinsic survival factors for T cells .
 various genes, T cells, NF-kappa B
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:
 various genes, T cells, NF-kappa B