11095
Using lentiviral gene knock - down and treatment with WY14 , 643 in primary human hepatocytes , PPAR alpha was further shown to affect the expression of a distinct set of CYPs , including 1A1 , 1A2 , 2B6 , 2C8 , 3A4 , and 7A1 , but not 2C9 , 2C19 , 2D6 , or 2E1 .
 Chemical: WY14 , 643
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: WY14 , 643