Complex tissues of finite life span will require {HEAD ~ cryopreservation} to expand product availability and {TAIL ~ utility} 
Complex tissues of finite life span will require { HEAD ~ cryopreservation } to expand product availability and { TAIL ~ utility }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL