And unfortunately, in order to get those stem cells, that requires killing the embryo.

而不幸的是，要想得到这些干细胞，就需要杀死胚胎。

干细胞和伦理 - SpeakingMax英语口语达人

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?

Earlier this week a team in the U.S. led by Shoukhrat Mitalipov of the Oregon National Primate Research Center, announced they had created the first cloned monkey embryo and extracted stem cells from it.

CNN: You, again: Are we getting closer to cloning humans?

These cells are then cloned to create an embryo, and then embryonic stem cells that are genetically inclined to discover this disease.

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