24673
All study participants were genotyped for five genetic variants in PON1 and the cytochrome P450 2C19 * 2 mutation ( CYP2C19 * 2 ) .
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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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