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Deletion mutation analysis of the HIV-2 long terminal repeat ( LTR ) suggests that the element that responds to CMV transactivation in human CD4+ lymphocytes is either a diffuse one or located downstream of the HIV-2 enhancer element .
 DNA: LTR; cell type: human CD4+ lymphocytes; DNA: HIV-2 enhancer element; DNA: HIV-2 long terminal repeat
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: LTR; cell type: human CD4+ lymphocytes; DNA: HIV-2 enhancer element; DNA: HIV-2 long terminal repeat