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标题	wDaITBWrBfcujoi
作者	Charlie	发表时间	2020/3/29 22:56:32
发表内容	When do you want me to start? http://fittor.top/sitemaps/1.html onlyfullpprn Stem cells can be taken from early embryos or be created from ordinary skin cells by injecting them with four genetic factors that re-programme the adult cells back to their embryonic state. These stem cells are called induced pluriopotent stem (iPS) cells and their discovery was awarded a Nobel prize in 2012.