Arginine, lysine, and {HEAD ~ glutamic acid} are preferably supplemented in {TAIL ~ the hydrogel matrix} 
preferably supplemented in
Arginine , lysine , and { HEAD ~ glutamic acid } are preferably supplemented in { TAIL ~ the hydrogel matrix }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL