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TCPOBOP , a CAR ligand , modestly induced mdr1a . fLUC in pxr ( + / + ) and pxr ( - / - ) strains , consistent with CAR ' s minor role in mdr1a regulation .
 Chemical: TCPOBOP
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: TCPOBOP