More work needs to be done to create viable human embryos, but the method might someday be used in IVF to help infertile people and male couples.

Researchers have created human embryos by taking nuclei from ordinary skin cells, placing them into donated eggs, and ...

Eggs contain 23 chromosomes needed for human development, which is half the usual number, because the sperm that fertilizes ...

The embryos weren’t used to try to establish a pregnancy, but the researchers behind the technique say it could one day be ...

That changed in 2014, when Swedish scientists showed that Y loss in blood cells correlates with how long men live – those who ...

Researchers transplant the nucleus of a skin cell into an egg, or oocyte, stripped of its own nucleus.

Among the many marvels of life is the cell's ability to divide and thus enable organisms to grow and renew themselves. For this, the cell must duplicate its DNA—its genome—and segregate it equally ...

This first step, called somatic cell nuclear transfer ... The goal would be to better capture what happens in a natural human pregnancy so that the right chromosomes are lost in the initial halving ...

The Atlas blue butterfly, with a record-breaking 229 pairs of chromosomes, is helping scientists unravel mysteries of ...

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.

An innovative use of skin cells could provide a route for same-sex couples or women with fertility problems to have children ...

The research could open up avenues for fertility treatments after additional refinement and trials, but it also raises ...