6294
Genotoxicity was less pronounced for Printex ( (R) ) 90 , but significant increases in gamma - H2AX - and 8 - OH - dG - positive nuclei and OGG1 - positive cytoplasm were nevertheless detected .
 Chemical: Printex; Chemical: 8 - OH - dG
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Printex, 8 - OH - dG 
Answer:
 Chemical: Printex; Chemical: 8 - OH - dG