19408
In this study , we aimed to investigate the therapeutic effects of puerarin ( PR ) , an active ingredient from kudzu root , on CCl4 - induced HF rats .
 Chemical: puerarin; Chemical: CCl4
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: puerarin; Chemical: CCl4