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The embryos would not be used for reproduction, but rather for the creation of embryonic stem cells. Many scientists believe that human embryonic... In a first attempt (top), researchers removed an ...

The cloning of human embryos by South Korean researchers has reignited debate about how to regulate human cloning. No reputable scientist wants to make artificial babies. But, there is heated ...

WASHINGTON — Sunday’s announcement that scientists in Massachusetts had begun to make cloned human embryos reverberated through international scientific, religious and legislative circles Monday, ...

Human cloning has been used to produce early embryos, marking a "significant step" for medicine, say US scientists. The cloned embryos were used as a source of stem cells, which can make new heart ...

Scientists in Massachusetts said yesterday they had succeeded in creating the world's first cloned human embryos, a controversial advance intended to speed the development of new medical therapies but ...

Lanza and the company's top executive Michael West said they had no interest in transplanting such early embryos into a woman's womb to give birth to a cloned human being, nor was it clear that their ...

Stanford University announced yesterday it would create an institute to develop medical therapies from human embryonic stem cells, the promising but controversy-laden cells found inside human embryos.

LONDON -- A maverick Kentucky scientist Saturday said he successfully made a cloned human embryo and transferred it to the womb of a 35-year-old woman. But many scientists met the claim with ...

For some time, scientists have been able to craft precise genetic copies of many creatures. Whether they are animals, or single cells, they are similarly referred to as clones. For various technical ...