The 14-day limit on scientific study of children conceived in vitro is already abhorrent, and any attempt to extend it should ...

The little clump of cells looked almost like a human embryo. Created from stem cells, without eggs, sperm, or a womb, the embryo model had a yolk sac and a proto-placenta, resembling a state that real ...

In a scientific “first,” a tiny heart structure composed of human cells has been successfully grown within a pig embryo.

In this new study, researchers have demonstrated the creation of robust macaque-human embryos ex vivo (or, outside an organism) using multi-purpose human stem cells that survived 19 days.

Embryo models are getting remarkably realistic.The little clump of cells looked almost like a human embryo. Created from stem cells, without eggs, sperm, or a womb, the embryo model had a yolk sac ...

Researchers have successfully created chimeric embryos containing a combination of human and pig cells. When transferred into surrogate pig mothers, the developing humanized kidneys had normal ...

A report this month from the U.N. University's Institute of Advanced Studies, however, warns that it is only a matter of time before a human being is cloned, claiming that while 50 countries have ...

Using only a mixture of stem cells, University of Cambridge researchers were able to generate a live, "synthetic" embryo — complete with a brain and beating heart.

Scientists have created "synthetic" mouse embryos from stem cells without a dad's sperm or a mom's egg or womb. The lab-created embryos mirror a natural mouse embryo up to 8 ½ days after ...

Chinese scientists have succeeded in growing kidneys containing human cells in pig embryos, a world first that could one day help address organ donation shortages. But the finding, published ...

The paper, which appeared in the Bulletin of the Chinese Academy of Sciences, specifically proposed that research on human embryos could be allowed to continue for 25-28 days.