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We used rat models of intrahepatic cholestasis by ethinyl estradiol ( EE ) treatment and extrahepatic cholestasis by bile duct ligation ( BDL ) to precisely determine the site of TJ damage .
 intrahepatic cholestasis, ethinyl estradiol, EE, extrahepatic cholestasis
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 intrahepatic cholestasis, ethinyl estradiol, EE, extrahepatic cholestasis