28502
Enzyme activities such as superoxide dismutase , glutathione , catalase and lipid peroxidation were also determined in the stomach tissues .
 Chemical: superoxide; Chemical: glutathione
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: superoxide; Chemical: glutathione