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All three agents induced mdr1a . fLUC expression ( bioluminescence ) , but only PCN and docetaxel appeared to act primarily via PXR .
 Chemical: PCN; Chemical: docetaxel
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: PCN; Chemical: docetaxel