a c k g r o u n d: In biomedical research, the past two decades have seen the advent of in vitro model systems based on stem cells, humanized cell lines, and engineered organotypic tissues, as well as numerous cellular assays based on primarily establishe
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机译：A C K G R O U N D：在生物医学研究中，过去二十年已经看到了基于干细胞，人源化细胞系和工程有机型组织的体外模型系统的出现，以及基于主要建立的许多细胞测定
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