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In conclusion , the findings of the study indicate that TCDD induces a significant oxidative stress in liver microsomes as manifested by increased LPO , H2O2 production , protein carbonyl content and activities of UDPGT and P450 and decreased antioxidant enzymes activities and thiol content .
 Chemical: TCDD; Chemical: H2O2; Chemical: carbonyl; Chemical: thiol
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: TCDD; Chemical: H2O2; Chemical: carbonyl; Chemical: thiol