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。

youdao

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。

youdao

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

科学家们发现，向一种物种的胚胎中注射干细胞，这种物种就会长出另外一个物种的器官。

youdao

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