13018
We also found that , when DNA duplexes have only 6 - bp CG - rich segment , the interaction with Z alpha ( ADAR1 ) did not affect the thermal stabilities of the 6 - bp CG - rich segment as well as the neighboring two A . T base pairs .
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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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