Tissue culture, such as microspore culture and embryo technique was widely developed in rapeseed breeding and fundamental studies.

小孢子技术、体细胞原生质体融合技术等组织培养手段已广泛应用于油菜育种及基础性研究。

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But his cells came from macaques, not humans, and his technique involves destroying the embryo.

ECONOMIST: Human embryonic stem cells

Preimplantation genetic diagnosis (PGD), the technique used to see if an embryo is a match, is legally permitted now if a genetic condition is present in a family.

BBC: Embryology Bill: The key points

In mice, Daley and colleagues have shown that stem cells derived from the nuclear transfer of cells to make embryos -- the technique described in Mitalipov's paper -- were indeed closer to natural embryo stem cells than induced pluripotent stem cells.

CNN: Cloning stem cells: What does it mean?