17189
Fibrotic status and the activation of hepatic stellate cells were improved upon pterostilbene supplementation as evidenced by histopathological examination as well as the expression of alpha - smooth muscle actin ( alpha - SMA ) , transforming growth factor - beta 1 ( TGF - beta 1 ) , and matrix metalloproteinase 2 ( MMP2 ) .
 Chemical: pterostilbene
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: pterostilbene