22540
In this study , we describe the generation of chitosan imidazole / siRNA nanoplexes ( NPs ) embedded in nano scope polyelectrolyte multilayers ( PEMs ) composed of hyaluronic acid and chitosan for sustained and localized drug delivery .
 Chemical: imidazole
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: imidazole