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Inhibition of the spontaneously beating phenotype , a feature of stem cell - derived cardiomyocytes , revealed some degree of cardioprotection following 10 out of 13 structural cardiotoxins , illustrating the intricate relationship between the function and structure of cardiomyocytes .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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