Scientists in Oregon have achieved something that many thought might be impossible. They said Wednesday that they have cloned human embryos and then harvested the embryo's stem cells. The discovery, ...

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A doctor claims to have cloned human embryos and implanted them in women. April 23, 2009— -- A controversial fertility doctor claims to have cloned human embryos and implanted them into four ...

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 ...

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 ...

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

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.

WASHINGTON -- The announcement by a U.S. company that it has cloned a human embryo for the first time has set off a heated debate on the ethics of the research, with the company on Monday staunchly ...

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 ...