9457
The aim of this study was to investigate the protective effect of 2 , 3 - dehydrosilybin ( DHS ) against carbon tetrachloride ( CCl ( 4 ) ) - induced liver injury in rats .
 Chemical: 2 , 3 - dehydrosilybin; Chemical: DHS; Chemical: carbon tetrachloride; Chemical: CCl ( 4 )
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: 2 , 3 - dehydrosilybin; Chemical: DHS; Chemical: carbon tetrachloride; Chemical: CCl ( 4 )