3964
These studies revealed that complex 1 binds to c - myc G - quadruplexes ( Pu22 and Pu27 ) with high affinity but does not interact with duplex DNA either by intercalation or groove 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:
 None