14154
Oxidative Stress and DNA Damage in Human Gastric Carcinoma : 8 - Oxo - 7 ' 8 - dihydro - 2 ' - deoxyguanosine ( 8 - oxo - dG ) as a Possible Tumor Marker .
 Chemical: 8 - Oxo - 7 ' 8 - dihydro - 2 ' - deoxyguanosine; 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 - 7 ' 8 - dihydro - 2 ' - deoxyguanosine; Chemical: 8 - oxo - dG