3375
The aim of this study was to investigate whether xanthohumol may exert chemoprotective activity through the modulation of the nuclear factor erythroid - 2 - related factor 2 ( Nrf2 ) pathway in immortalized normal THLE - 2 hepatocytes and a hepatocellular carcinoma HepG2 cell line .
 Chemical: xanthohumol
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: xanthohumol