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