29231
Our data indicate that these double - layered wound bandages were just as swellable , but more elastic and stronger than single - layered wound dressings comprised of the same polymers and quantities , possibly giving an acceptable level of moisture and accumulation of exudates in the wound zone .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None