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