{HEAD ~ Suitable carriers} may include, for example, a physiological buffer solution, {TAIL ~ a flowable gel solution}, saline, and water 
include
{ HEAD ~ Suitable carriers } may include , for example , a physiological buffer solution , { TAIL ~ a flowable gel solution } , saline , and water
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH