The inventors have discovered {HEAD ~ a method} for cryopreserving {TAIL ~ cultured tissue equivalents} made from in vitro techniques so that the tissues maintain their viability and utility as equivalents of human tissues 
The inventors have discovered { HEAD ~ a method } for cryopreserving { TAIL ~ cultured tissue equivalents } made from in vitro techniques so that the tissues maintain their viability and utility as equivalents of human tissues
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