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Based on these results we estimate a 5-10% difference in virus production of the LTR variants when compared to that of wild-type .
 DNA: LTR variants
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 variants