Even more successful were the parthenogenesis experiments, in which five of eight human eggs were coaxed into growing into blastocysts. At this stage — approximately 100 cells — an embryo can ...

Scottish researcher Richard Anderson and colleagues plan to experiment on human embryos made from ovarian stem cell-derived eggs. (photo: MRC Centre for Reproductive Health at Edinburgh University ...

Stem-Cell Scientists Compete for Human Eggs Even though South Korean scientists apparently failed to make human embryonic stem cells from cloned human embryos, several teams around the world are ...

Scientists have found a way to make stem cells from unfertilized eggs, suggesting a potential alternative to controversial and technically difficult embryo cloning. A group at Harvard University ...

Human cloning was a particular challenge, in part because scientists had trouble getting enough donor eggs to carry out their experiments. Some scientists said SCNT in humans would be impossible.

A Japanese research team made immature human eggs from stem cells that were derived from human blood. The technique brings scientists a step closer to being able to mass-produce human eggs.

Two groups at Harvard University announced on Tuesday that they have received approval to start human-cloning research aimed at creating lines of embryonic stem cells to study and treat diseases.

The group’s work on in vitro gametogenesis (IVG) in human cells is being made possible by an award from Open Philanthropy — a grant-making organization primarily funded by Facebook co-founder ...

If a biologist could look at a fertilized human egg-cell under a super-powerful microscope, ... Last week they made experiments with this device, which they call a .