16593
Catalase , glutathione - S - transferase and xanthine oxidase activities were not altered by atorvastatin treatment or withdrawal , as well as protein carbonyl and 4 - hydroxy - 2 - nonenal immunoreactivity .
 Chemical: glutathione; Chemical: S; Chemical: xanthine; Chemical: atorvastatin; Chemical: carbonyl; Chemical: 4 - hydroxy - 2 - nonenal
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: glutathione; Chemical: S; Chemical: xanthine; Chemical: atorvastatin; Chemical: carbonyl; Chemical: 4 - hydroxy - 2 - nonenal