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Activities of the antioxidant enzymes of erythrocytes such as superoxide dismutase , catalase , glutathione S - transferase and glutathione peroxidase increased significantly in a dose - dependent manner with significant elevation in hydrogen peroxide and malondialdehyde levels , whereas glutathione level was not significantly decreased in BLCO - treated animals .
 Chemical: superoxide; Chemical: glutathione; Chemical: S; Chemical: glutathione; Chemical: hydrogen peroxide; Chemical: malondialdehyde; 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; Chemical: S; Chemical: glutathione; Chemical: hydrogen peroxide; Chemical: malondialdehyde; Chemical: glutathione