A colony of human embryonic stem cells is seen on a computer monitor at the University of Wisconsin–MadisonDarren Hauck / Getty Researchers at Newcastle University in England report they have coaxed ...

The day when human sperm and eggs can be grown in the laboratory has inched a step closer, with the discovery of a way to recreate a crucial developmental step in a dish 1. “Epigenetic reprogramming ...

Sperm cells have a monumental task, but their days are numbered. From the moment they're made in the testes to the time they may spend winding their way up the labyrinthine of the female reproductive ...

Researchers showed how what appears to be a tangle of DNA is actually organized into a structure that coordinates thousands of genes to form a sperm cell. The work, published as two papers in Nature ...

The image shows centromeres (white) at the edge of the nucleus (blue) shortly before meiosis begins in a mouse germ cell (Huang et al., 2026). In our cells, our DNA carries chemical or ‘epigenetic’ ...

Paterna Biosciences said it has mastered the molecular signals that teach stem cells how to mature into sperm for a promising ...

Human sperm have long been a subject of fascination—not just for their role in fertilization, but for their remarkable ability to navigate through some of the most viscous environments in the body.

Scientists have tried for decades to produce human sperm outside the body. A Salt Lake City company says they’ve succeeded – ...

Utah startup says it grew human sperm in lab, creating embryos in early test of infertility breakthrough.