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Oral pre - treatment with PK ( 80 mg kg ( - 1 ) day ( - 1 ) for 15 days ) significantly prevented the isoproterenol - induced myocardial infarction and maintained the rats at near normal status .
 Chemical: isoproterenol; Disease: myocardial infarction
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: isoproterenol; Disease: myocardial infarction