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Taken together , our results present PVA HNP as promising colloidal hydrogel nanocarriers for biomedical applications , specifically drug delivery and assembly of intracellular biosensors .
 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