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Types of damaged lesions frequently found inside clustered DNA damage sites include oxidized bases , abasic sites , nucleotide dimers , strand breaks or their complex combinations .
 Chemical: nucleotide dimers
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: nucleotide dimers