In Greek mythology, a chimera is a grotesque hybrid. But chimeras are not just tales. Here's how some scientists have been ...

Researchers investigating how this complexity arises have made human-animal chimeric embryos by introducing human pluripotent stem cells into the embryos of other animals, such as mice and pigs ...

That must have been one heck of a toothy smile—imagine regular pig teeth growing next to bioengineered human-ish ones. After ...

such as sheep and pig embryos with human cells, but those pregnancies were terminated after a few days or weeks. This experiment aims to eventually bring chimera embryos to term, resulting in the ...

Researchers have developed a way to grow human-sized tooth-like tissues in the mouths of pigs – this may be a lot to chew on, ...