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Currently , there exist many gaps in our knowledge of canine CYP diversity as a result of the paucity of studies focusing on canine CYPs , canine CYP polymorphisms , and the therapeutic consequences of these genetic variants .
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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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