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