The complexes are further covalently bonded with cationic carriers and permeabilizer peptides for delivery across the blood brain barrier and with targeting {TAIL ~ moieties} for uptake by {HEAD ~ target brain cells} 
The complexes are further covalently bonded with cationic carriers and permeabilizer peptides for delivery across the blood brain barrier and with targeting { TAIL ~ moieties } for uptake by { HEAD ~ target brain cells }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD