6636
To address these limitations , PVA is synthesized with terminal thiol groups and conjugated with thiolated peptides using PVA in solution .
 Chemical: PVA; Chemical: thiol; Chemical: PVA
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: PVA; Chemical: thiol; Chemical: PVA