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In HIV-1 , the sequences that respond to these signaling events are found in the long terminal repeat ( LTR ) and comprise the transcriptional enhancer , which contains two conserved binding sites for the nuclear factor kappa B ( NF kappa B ).
 DNA: conserved binding sites; protein: nuclear factor kappa B; DNA: long terminal repeat; DNA: LTR; protein: NF kappa B; DNA: transcriptional enhancer
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:
 DNA: conserved binding sites; protein: nuclear factor kappa B; DNA: long terminal repeat; DNA: LTR; protein: NF kappa B; DNA: transcriptional enhancer