4551
We utilized siRNA technology to deplete Ogg1 from airway epithelium ; 8 - oxoG and DNA strand break levels were quantified by Comet assays .
 Chemical: 8 - oxoG
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: 8 - oxoG