27441
Micellar nanoparticles were assembled from amphiphilic diblock copolymers composed of an ampholytic core - forming block and a redesigned polycationic corona block doped with thiol - reactive pyridyl disulfide groups to enable dual - delivery of antigens and immunostimulatory CpG oligodeoxynucleotide ( CpG ODN ) adjuvants .
 Chemical: thiol; Chemical: pyridyl disulfide; Chemical: CpG; Chemical: CpG
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: thiol; Chemical: pyridyl disulfide; Chemical: CpG; Chemical: CpG