4031
DNA was extracted from blood samples and single - nucleotide polymorphisms in the CYP2C8 ( CYP2C8 * 2 , CYP2C8 * 3 , CYP2C8 * 4 , CYP2C8 * 5 ) and CYP2C9 ( CYP2C9 * 2 , CYP2C9 * 3 ) genes were evaluated using real - time polymerase chain reaction .
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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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