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The protection by overexpression of superoxide dismutase supports the hypothesis that oxidant stress plays a significant role in aminoglycoside - induced ototoxicity .
 Chemical: superoxide; Chemical: aminoglycoside; 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: superoxide; Chemical: aminoglycoside; Disease: ototoxicity