14494
The transactivator HTLV-I Tax activates the promoter of the gene coding for the interleukin 2 alpha-chain receptor ( IL-2R alpha ) via a kappa B site that can bind several protein species of the rel family .
 rel family, HTLV-I Tax, interleukin 2 alpha-chain receptor, IL-2R alpha, promoter, kappa B site
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:
 rel family, HTLV-I Tax, interleukin 2 alpha-chain receptor, IL-2R alpha, promoter, kappa B site