Older embryos can survive stem-cell extraction: Mouse study suggests stem-cell work could be made more efficient.

Source: Nature
Posted: 25 October 2006

Summary:

US researchers say they have improved the technique by which stem cells can be coaxed from an embryo without harming it. The technique has been used only on mouse embryos and is still being refined. But it might improve attempts to make embryonic stem (ES) cell lines without destroying human embryos.