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A novel T-cell protein which recognizes a palindromic sequence in the negative regulatory element of the human immunodeficiency virus long terminal repeat .
 DNA: human immunodeficiency virus long terminal repeat; protein: T-cell protein; DNA: palindromic sequence; DNA: negative regulatory element
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: human immunodeficiency virus long terminal repeat; protein: T-cell protein; DNA: palindromic sequence; DNA: negative regulatory element