9456
Hepatoprotective effect of 2 , 3 - dehydrosilybin on carbon tetrachloride - induced liver injury in rats .
 Chemical: 2 , 3 - dehydrosilybin; Chemical: carbon tetrachloride
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: carbon tetrachloride