26663
Keeping in view the biochemical and histopathological studies , it was concluded that CCl4 and TAA are strong hepatotoxic agents that produce liver fibrosis with close proximity to human etiology ( micronodular cirrhosis ) and NAC has a significant protective activity against CCl4 and TAA .
 Chemical: CCl4; Chemical: TAA; Chemical: NAC; Chemical: CCl4; Chemical: TAA
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: CCl4; Chemical: TAA; Chemical: NAC; Chemical: CCl4; Chemical: TAA