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We therefore hypothesized that overexpression of Cu / Zn - superoxide dismutase ( h - SOD1 ) should protect transgenic mice from ototoxicity .
 Chemical: Cu; Chemical: Zn; Chemical: superoxide; Disease: ototoxicity
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: Cu; Chemical: Zn; Chemical: superoxide; Disease: ototoxicity