26820
The deoxyuridine residues were converted into abasic sites by treatment with UDG enzyme creating an abasic clustered damage site in a precise position in each of the single strand of the DNA duplex .
 Chemical: deoxyuridine
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: deoxyuridine