2049
Functional studies indicated that the TF site conferred LPS inducibility on a heterologous promoter and was transactivated by c-Rel or p65 .
 heterologous promoter, c-Rel, TF, p65, TF 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:
 heterologous promoter, c-Rel, TF, p65, TF site