Researchers at Newcastle University in England report they have coaxed the first human sperm cells from embryonic stem cells, in a remarkable demonstration of how quickly the field of stem-cell ...

Once a sperm has broken through to an egg cell in order to fertilize it, the two cells need to hold together tightly. This ...

This microscope image provided by Osaka University and the Research Institute of Molecular Pathology in October 2024, shows the fertilization of a mouse egg marked in red and green. DNA is marked in ...

Once a sperm has broken through to an egg cell in order to fertilise it, the two cells need to hold together tightly. This ...

US scientists testing the technique say it could help people overcome infertility and potentially allow same-sex couples to ...

WASHINGTON (AP) — Oregon scientists used human skin cells to create fertilizable eggs, a step in the quest to develop lab-grown eggs or sperm to one day help people conceive. But the experiment ...

Human embryos have been developed from eggs given the DNA of adult skin cells – a feat that had previously been achieved in mice. This could one day provide a way for same-sex couples or women with ...