22081
CONCLUSION : Surfactant - based vesicles enhance ketoprofen transport across human skin , while no enhancement of ketoprofen was observed when loaded in elastic liposomes .
 Chemical: ketoprofen; Chemical: ketoprofen
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: ketoprofen, ketoprofen 
Answer:
 Chemical: ketoprofen; Chemical: ketoprofen