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We show here that chronic HIV infection results in both induction of a nuclear factor with antigenic properties indistinguishable from those of NF-kappa B and permanently increased HIV enhancer activity .
 protein: nuclear factor; protein: NF-kappa B; DNA: HIV 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:
 protein: nuclear factor; protein: NF-kappa B; DNA: HIV enhancer