15023
Using a validated human PBK model , this study investigated the influence of functionally relevant polymorphic UGT2B15 , the enzyme mediating BPA metabolism , on the BPA concentration - time profile in human blood .
 Chemical: BPA; Chemical: BPA
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: BPA; Chemical: BPA