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Isolated myofibers took up ethidium ( Etd ( + ) ) and released small molecules ( as ATP ) during electrical stimulation .
 Chemical: ethidium; Chemical: Etd ( + ); Chemical: ATP
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: ethidium; Chemical: Etd ( + ); Chemical: ATP