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The viral trans-activators appear to target specific DNA binding protein such as NF-kB and Sp1 to cis-acting DNA site and promote lymphokine gene expression without TCR -mediated stimulation .
 protein: TCR; DNA: cis-acting DNA site; protein: Sp1; protein: DNA binding protein; DNA: lymphokine gene; protein: NF-kB; protein: viral trans-activators
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: TCR; DNA: cis-acting DNA site; protein: Sp1; protein: DNA binding protein; DNA: lymphokine gene; protein: NF-kB; protein: viral trans-activators