After years of trial and error, scientists have finally done something incredible: They have successfully grown human stem cells in a pig embryo. Why would anyone do this? Turns out, many ...

A group led by scientists at the Salk Institute for Biological Studies has taken the first big step toward making this a reality: today (January 26) in Cell, they report having grown the first ...

In a separate set of pig embryos, the team modified genes coding for the cell membrane proteins that would trigger a human immune response. Pigs intended as organ donors in the future will require ...

DNA from ancient viruses that form a part of the human genome may be contributing in the early development of an embryo in ...

Ross is placing human cells into pig and sheep embryos and hopes to combine the DNA of two species to create an almost endless supply of replacement organs for humans. It sounds like something ...

Researchers have previously created human-animal embryos, such as sheep and pig embryos with human cells, but those pregnancies were terminated after a few days or weeks. This experiment aims to ...