24976
Unexpectedly , PVA HNP exerted a pronounced inhibition of NO synthesis by stimulated macrophages , that is , had an anti - inflammatory activity .
 Chemical: PVA; Chemical: NO
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: NO