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The replaced enhancer is propagated to the 5' LTR upon integration into the target cell genome .
 replaced enhancer, 5' LTR, target cell genome
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 replaced enhancer, 5' LTR, target cell genome