6882
With human hepatocytes , treatment with phenobarbital , hyperforin , carbamazepine , and rifampin significantly increased the levels of CYP3A4 , but not CYP24A1 or CYP27B1 mRNA .
 Chemical: phenobarbital; Chemical: hyperforin; Chemical: carbamazepine; Chemical: rifampin
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: phenobarbital; Chemical: hyperforin; Chemical: carbamazepine; Chemical: rifampin