In some cases, {HEAD ~ chemical crosslinking step} can include {TAIL ~ treatment} of a polyelectrolyte multilayer with a carbodiimide reagent 
In some cases , { HEAD ~ chemical crosslinking step } can include { TAIL ~ treatment } of a polyelectrolyte multilayer with a carbodiimide reagent
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH