The cultured tissue equivalent is {HEAD ~ an in vitro model} of the equivalent human tissue, such as skin or cornea, which, when retrieved from {TAIL ~ storage} can be used for transplantation or implantation in vivo or for screening compounds in vitro 
The cultured tissue equivalent is { HEAD ~ an in vitro model } of the equivalent human tissue , such as skin or cornea , which , when retrieved from { TAIL ~ storage } can be used for transplantation or implantation in vivo or for screening compounds in vitro
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