17544
We show that a catalytically dead Cas9 lacking endonuclease activity , when coexpressed with a guide RNA , generates a DNA recognition complex that can specifically interfere with transcriptional elongation , RNA polymerase binding , or transcription factor binding .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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