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Indeed , ouabain ( OUA ) , a potent blocker of the pump , is used to inhibit some PLTX effects in vitro .
 Chemical: ouabain; Chemical: OUA; Chemical: PLTX
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: ouabain; Chemical: OUA; Chemical: PLTX