14163
The high levels of 8 - oxo - dG in urine may be related to the increased induction of DNA repair activity in tumor tissue , and the changes observed after tumor resection support its potential use as a tumor marker .
 Chemical: 8 - oxo - dG
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 - oxo - dG