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