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Cell-specific differences in activation of NF-kappa B regulatory elements of human immunodeficiency virus and beta interferon promoters by tumor necrosis factor .
 protein: NF-kappa B; DNA: NF-kappa B regulatory elements; protein: tumor necrosis factor
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: NF-kappa B; DNA: NF-kappa B regulatory elements; protein: tumor necrosis factor