5780
Mutagenesis of NF kappa B or Sp-1 elements within the LTR resulted in no change in the ability of CD8+ T cell supernatants to inhibit Tat- or mitogen- mediated LTR transcription .
 LTR, CD8+ T cell
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:
 LTR, CD8+ T cell