29225
Abstract The conservative single - layered wound dressing system is decomposed when mixed in polyvinyl alcohol ( PVA ) solution , which means it cannot be used with a temperature - sensitive drug .
 Chemical: polyvinyl alcohol; 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: polyvinyl alcohol; Chemical: PVA