{HEAD ~ The targeting complexes} are further specific for agent delivery through {TAIL ~ receptor pathways} to neuronal membranes or to astroglial cells 
{ HEAD ~ The targeting complexes } are further specific for agent delivery through { TAIL ~ receptor pathways } to neuronal membranes or to astroglial cells
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH