Scientists have used human skin cells to produce functional eggs using a new scientific technique they say could one day help ...

In a proof-of-concept experiment, scientists demonstrated that you can create and fertilize human eggs in the lab using sperm ...

Katsuhiko Hayashi, a developmental geneticist at Osaka University, is working on ways to make what he calls "artificial" eggs and sperm from any cell in the human body. (Kosuke Okahara for NPR) ...

In the face of the very real cross of infertility that many couples face today, the Church instead promotes research into ...

Scientists have successfully created immature human egg-like cells from skin-derived stem cells, a significant step in ...

How do stem cells know what to become? Nearly three decades after scientists isolated the first human embryonic stem cells, researchers are still working hard to understand precisely how a single, ...

Researchers at Oregon Health & Science University (OHSU) have developed a remarkable new way for making human body cells ...

A lot happens in the first month of human embryo development as a single cell morphs into multitudes. Yet despite its significance, this period is basically a “black box” to researchers, says stem ...

Scientists in the United Kingdom have turned to the humble human sperm in their quest to design the ultimate swimming robot. Made of a tiny magnetic head and squiggly elastic tail, the flea-size ...

Katsuhiko Hayashi pulls a clear plastic dish from an incubator and slides it under a microscope. "You really want to see the actual cells, right?" Hayashi asks as he motions toward the microscope.