7882
Hepatocyte viability ( cytotoxicity ) was assessed using Trypan blue uptake ; formation of reactive oxygen species ( ROS ) and endogenous H2O2 were also assessed in the hepatocyte model .
 Chemical: Trypan blue; Chemical: oxygen; Chemical: H2O2
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: Trypan blue, oxygen, H2O2 
Answer:
 Chemical: Trypan blue; Chemical: oxygen; Chemical: H2O2