The history of {TAIL ~ cryopreservation} of {HEAD ~ biological material}, however, has shown that the optimization of a cryopreservation protocol for a particular cell does not necessarily give good results when used with another cell type or with other cells in a tissue 
The history of { TAIL ~ cryopreservation } of { HEAD ~ biological material } , however , has shown that the optimization of a cryopreservation protocol for a particular cell does not necessarily give good results when used with another cell type or with other cells in a tissue
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