14867
These studies, the first to demonstrate induction of LT promoter activity over basal levels, indicate that HTLV-I tax causes low-level activation of both endogenous LT and the LT promoter , at least in part through activation of NF-kappa B .
 LT, HTLV-I tax, LT promoter, LT, NF-kappa B, LT 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:
 LT, HTLV-I tax, LT promoter, LT, NF-kappa B, LT promoter