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The absence of induction of these genes as well as hepatomegaly in PPARalpha knockout [ PPARalpha - / - ] mice indicated that the effects of amiodarone were dependent upon the presence of a functional PPARalpha gene .
 Disease: hepatomegaly; Chemical: amiodarone
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:
 Disease: hepatomegaly; Chemical: amiodarone