29230
The double - layered wound dressing gave a similar gel fraction and Young ' s module as single - layered wound bandages developed with only PVA , and a similar inflammation ability and WVTR as single - layered wound dressings developed with PVA and sodium alginate .
 Chemical: PVA; Chemical: PVA; Chemical: sodium alginate
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: PVA; Chemical: sodium alginate