Scientists have created human sperm for the first time from stem cells. The research, carried out at Newcastle University in Britain, may enable infertile men to have children, while provoking another ethical debate about the progress of reproductive biology.
科學家首次從人體幹細胞中造出精子。由英國紐卡索大學(Newcastle University)完成的這項研究,也許能讓男性不育症患者繁衍後代,同時引發又一輪關於生殖生物學進展的倫理之爭。
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