Also, {HEAD ~ one or more cross} linking agents may be used in conjunction with one or more gelling agents in order to cross link {TAIL ~ the gelling agent} 
Also , { HEAD ~ one or more cross } linking agents may be used in conjunction with one or more gelling agents in order to cross link { TAIL ~ the gelling agent }
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL