Cryopreservation of harvested skin and {HEAD ~ cultured skin} or cornea equivalents by {TAIL ~ slow freezing} 
by
Cryopreservation of harvested skin and { HEAD ~ cultured skin } or cornea equivalents by { TAIL ~ slow freezing }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL