28065
To assess the potential of these enzymes for facilitating resolution of damaged ends during double - strand break rejoining , substrates bearing a variety of normal and structurally modified 3 ' overhangs were constructed , and treated either with Metnase or with Artemis plus DNA - dependent protein kinase ( DNA - PK ) .
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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