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We have previously identified a T lymphocyte protein which binds to a site within the LTR of the human immunodeficiency virus type 1 ( HIV-1 ) and exerts an inhibitory effect on virus gene expression .
 protein: T lymphocyte protein; DNA: LTR
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: T lymphocyte protein; DNA: LTR