26649
Aim of present study was to investigate the effect of NAC on experimental chronic hepatotoxicity models induced by carbon tetrachloride ( CCl4 ) and thioacetamide ( TAA ) .
 Chemical: NAC; Chemical: carbon tetrachloride; Chemical: CCl4; Chemical: thioacetamide; 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: NAC; Chemical: carbon tetrachloride; Chemical: CCl4; Chemical: thioacetamide; Chemical: TAA