1355
In THP-1 cells with restricted HIV expression , there is an absence of DNA-protein binding complex formation with the HIV-1 promoter-enhancer associated with markedly less viral RNA production .
 cell line: THP-1 cells; RNA: viral RNA; DNA: HIV-1 promoter-enhancer; protein: DNA-protein binding complex
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:
 cell line: THP-1 cells; RNA: viral RNA; DNA: HIV-1 promoter-enhancer; protein: DNA-protein binding complex