Stem cells made from skin have become "grandparents" after generations of life were created in experiments by scientists in Japan.
The cells were used to create eggs, which were fertilised to produce baby mice. These later had their own babies. If the technique could be adapted for people, it could help infertile couples have children and even allow women to overcome the menopause.
But experts say many scientific and ethical hurdles must be overcome. Stem cells are able to become any other type of cell in the body from blood to bone, nerves to skin. Last year the team at Kyoto University managed to make viable sperm from stem cells. Now they have performed a similar feat with eggs.
They used stem cells from two sources: those collected from an embryo and skin-like cells which were reprogrammed into becoming stem cells. The first step, reported in the journal Science, was to turn the stem cells into early versions of eggs.
A "reconstituted ovary" was then built by surrounding the early eggs with other types of supporting cells which are normally found in an ovary. This was transplanted into female mice.
Superbugs, or enterococci bacteria, have been honing their defensive capabilities for at least 450 million years.As...
Philippines President Rodrigo Duterte said he could not commit to visiting the White House after President...
A team of Belgian scientists have developed a new device capable of generating power while cleaning...
The Cassini spacecraft is sending data back to Earth after diving in between Saturn's rings and...
