In an E-mail, the journal cited the highly publicized 2004 fraud that came out of South Korea, where researchers led by Hwang woo-Suk claimed to have produced stem cells from a cloned human embryo.

在一封e - mail中，自然杂志特别引用了2004年广为传播的韩国Hwang woo - Suk小组得到人类克隆胚胎的丑闻。

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Two research teams in the US and Japan have made embryonic stem cells – or something very like them – directly from human skin cells, without having to destroy an embryo in the process.

美国和日本的两个研究小组已直接从人体皮肤细胞中提取出胚胎干细胞（或非常类似的细胞），同时在这一过程中没有破坏胚胎。

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Scientists have found they can create chimeric animals that have organs belonging to another species by injecting stem cells into the embryo of another species.

科学家们发现只需向动物胚胎中注射另一物种的干细胞，他们便能创造出一种拥有另一物种器官的嵌合体动物。

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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.

FORBES: Cell News Opens Door To Drug Discovery