22768
Several PIs have been implicated to activate the nuclear receptor pregnane X receptor ( PXR ) , which acts as a xenobiotic sensor to regulate xenobiotic metabolism in the liver and intestine .
 Chemical: pregnane
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: pregnane