14387
Collectively , our results show that repeated administration of rifampin in mice leads to a reduction in oral exposure due to induction of Pgp - mediated efflux of rifampin , and not via induction of CYP3A isoforms .
 Chemical: rifampin; 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: rifampin; Chemical: rifampin