4778
Activity of CYP7A was decreased by EE in both intact and bile - diverted rats , whereas the activity of the CYP27 was not affected .
 Chemical: EE
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: EE