A research team from the Department of Obstetrics and Gynecology at the University of Hong Kong's LKS Faculty of Medicine ...

For a baby to be born, one egg has to be fertilized by one of 250 million sperm. This research suggests that mate choice continues after sex and that human eggs can favor some sperm over others.

While the metaphor of an active sperm and a passive egg has long been used to describe fertilization, a more gender-egalitarian approach is circulating.

An international team of researchers has discovered a fundamental protein in human fertilization, called MAIA, which could lead to an improved understanding of infertility. For fertilization to be ...

The egg, in turn, waits patiently for the winning sperm to pierce its outer membrane, triggering fertilization.

Human bodies have to be built from a single egg cell that's fertilized by a sperm cell. Many rounds of cell division occur as the body is developing, and it seems that there are plenty of chances for ...

CatSper-deficient human sperm fail to fertilize the egg, because they cannot penetrate its protective vestments. Thus far, this sperm channelopathy has remained undetectable.

In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a “fairy tale ...

A cellular signaling system that responds to THC, the active substance in marijuana, as well as to anandamide, a cannabinoid-like molecule normally produced in the body, may regulate sperm functions ...

A fascinating new study finds those chemical-based preferences continue even after sex. Human eggs appear to “choose” which sperm will become the lucky winner in conceiving a baby.

Oh, brave new world, that has such embryos in it. In a dramatic scientific first, researchers have created synthetic human embryos without using sperm or an egg. No one knows if these embryonic ...

In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a 'fairy tale ...