{HEAD ~ Micellar nanoparticles} or polymeric micelles or vesicles composed of {TAIL ~ amphiphilic block copolymers} (Rijcken et al.,  
composed of
{ HEAD ~ Micellar nanoparticles } or polymeric micelles or vesicles composed of { TAIL ~ amphiphilic block copolymers } ( Rijcken et al . ,
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH