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 ...

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

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

Egg fertilization is often described as an epic swim meet: Millions of sperm swim as fast as they can toward the egg until one — the fastest, strongest, healthiest sperm of them all — wins the race ...

After the egg has been fertilized by a sperm, the surrounding egg coat tightens, mechanically preventing the entry of additional sperm and the ensuing death of the embryo. This is according to a new ...

The first mice to be created from two fathers, a phenomenon known as androgenesis, have now produced healthy offspring for the first time. Researchers implanted two sperm in an egg with its nucleus ...

Sex cells made from scratch could revolutionize human reproduction. But researchers are struggling to translate promising ...

A Yale-led research team has uncovered how a naturally occurring biological mechanism found in mammals is able to prevent sperm cells from interacting with an egg, preventing fertilization. The ...

Lila Bonner was killed in the Hill Country floods. She went missing from Camp Mystic on Friday, July 4, 2025. Read full article: Concrete truck driver sentenced to 18 years in prison for deadly Hays ...