For now, that goal remains elusive. The lab-grown cells stopped developing at an immature stage. Many hurdles need to be ...

Lab-grown sperm could soon become a reality after scientists were able to create germ cells, the precursor to reproductive cells.

A startup out of Utah, Paterna Biosciences, says it has successfully grown functional human sperm in a lab and used the sperm to make visibly healthy-looking embryos. The technique could eventually ...

Groundbreaking research shows that as men age, harmful genetic mutations in sperm become more common—not just from random chance, but because some are naturally favored. Advanced sequencing revealed ...

Once a sperm has broken through to an egg cell in order to fertilize it, the two cells need to hold together tightly. This occurs via a type of protein binding that is among the strongest in ...