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Only phenytoin sodium displayed in vitro antiarrhythmic activity against strophanthidin - induced arrhythmias in guinea pig right atria .
 Chemical: phenytoin sodium; Chemical: strophanthidin; Disease: arrhythmias
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: phenytoin sodium; Chemical: strophanthidin; Disease: arrhythmias