How a sperm and an egg fuse together has long been a mystery. New research by scientists in Austria provides tantalizing clues, showing fertilization works like a lock and key across the animal ...

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, a new study finds. The work ...

(BOSTON) — More than one-sixth of adults around the world experience infertility in their lifetime. There is a high unmet need not only for increased access to affordable, high-quality fertility care ...

A memorial outside Patriot Oaks Academy continues to grow after a 12-year-old was killed in a crash outside the school. Read full article: Community gathers at Patriot Oaks Academy to remember 12-year ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. How a sperm and an egg fuse together has ...