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The objective of the current study was to investigate the potential oxidative damage of 2 , 3 , 7 , 8 - tetrachlorodibenzo - p - dioxin ( TCDD ) in hepatic microsomal fractions in vitro and to further elucidate the potential modulatory effect of lycopene .
 Chemical: 2 , 3 , 7 , 8 - tetrachlorodibenzo - p - dioxin; Chemical: TCDD; Chemical: lycopene
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: 2 , 3 , 7 , 8 - tetrachlorodibenzo - p - dioxin; Chemical: TCDD; Chemical: lycopene