11595
Our previous study indicated that areca nut extract enriched with catechin - based procyanidins from oligomers to polymers gave rise to anti - inflammatory effects in vitro and in vivo .
 Chemical: catechin; Chemical: procyanidins
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: catechin; Chemical: procyanidins