The Japan Times reports on mixing and matching the components of humans and non-human animals:
Proposed experiments with animal-human embryos cleared the first regulatory hurdle Tuesday as Japanese scientists seek permission for tests that could see human organs produced inside the growing body of an animal.
Researchers want to introduce a human stem cell into an animal embryo, to create a so-called chimeric embryo, which they can implant into an animal’s womb.
The hope is that this stem cell will grow into a fully-functioning human organ — a kidney or a liver, for example — as the animal matures. This would mean when the creature is fully grown, the organ could be harvested from the animal and used for transplanting into a person in need.
Unlike in the United States, there is little public opposition to research of this kind, with domestic media coverage overwhelmingly positive, reflecting relatively high levels of scientific literacy in the country.