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Deletion of the NF-kappa B elements of the HIV-1 LTR significantly inhibited Tat -mediated transactivation in T-cell lines , as well as in a monocyte line , U937 .
 protein: NF-kappa B; cell line: U937; cell line: monocyte line; DNA: NF-kappa B elements; cell line: T-cell lines; protein: Tat; DNA: HIV-1 LTR
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: NF-kappa B, U937, monocyte line, NF-kappa B elements, T-cell lines, Tat, HIV-1 LTR 
Answer:
 protein: NF-kappa B; cell line: U937; cell line: monocyte line; DNA: NF-kappa B elements; cell line: T-cell lines; protein: Tat; DNA: HIV-1 LTR