Flowable gel solutions may comprise {HEAD ~ one or more gelling materials} with or without added water, {TAIL ~ saline}, or a physiological buffer solution 
without
Flowable gel solutions may comprise { HEAD ~ one or more gelling materials } with or without added water , { TAIL ~ saline } , or a physiological buffer solution
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH