20005
Concentrated BC / PNB nanogel dispersion displayed gel a forming capacity in situ by catheter injection , which indicates potential for a wide range of medical applications .
 Chemical: PNB
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: PNB 
Answer:
 Chemical: PNB