27573
The administration of OPZ or NK - 252 significantly attenuated the progression of histological abnormalities in rats on a CDAA diet , especially hepatic fibrosis .
 OPZ, NK - 252
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 OPZ, NK - 252