1356
This absence of binding was localized to the NF-kappa B region of the HIV-1 enhancer ; the 65-kDa plus 50-kDa NF-kappa B heterodimer was preferentially lost.
 DNA: HIV-1 enhancer; DNA: NF-kappa B region; protein: 65-kDa plus 50-kDa NF-kappa B heterodimer; protein: NF-kappa B; protein: NF-kappa B
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: HIV-1 enhancer; DNA: NF-kappa B region; protein: 65-kDa plus 50-kDa NF-kappa B heterodimer; protein: NF-kappa B; protein: NF-kappa B