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 ...

CHICAGO (Reuters) - U.S. researchers have found a way to coax human embryonic stem cells to turn into the types of cells that make eggs and sperm, shedding light on a stage of early human development ...

New insights into a sophisticated process that protects sperm cells has revealed a mechanism, similar to an immune system, thwarts genetic chaos during the earliest stages of their development.

More successful IVF, egg cells from men, and sperm cells from women? Biotech researchers aim to greatly expand reproductive opportunity. WATCH: New infertility technologies could make the previously ...

A man who battled childhood cancer has received the first known transplant of sperm-producing stem cells, in a study aimed at restoring the fertility of cancer's youngest survivors. Jaiwen Hsu was 11 ...

Researchers at the UC Davis College of Biological Sciences have discovered that a little-known protein called ATF7IP2 helps to inactivate the X and Y chromosomes during cell divisions that lead to ...