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Using transgenic mice , we show that this promoter does not confer any tissue specificity and is active only in a position-dependent manner .
 DNA: promoter
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: promoter