Cells with the potential to form sperm and eggs have been derived from northern white rhino skin cells, raising hopes that lab-grown embryos could save the animals from extinction. The only two ...

We all know the drill for reproduction—sperm meets egg. But mice aren’t people. And the same recipe doesn’t work for human reproductive cells. One reason, according to Dr. Mitinori Saitou at Kyoto ...

During fertilisation, the egg cell and the sperm are bound together by, among other things, two specific proteins. Researchers have now demonstrated that this represents a special type of binding, ...

Male infertility is a major issue worldwide and its causes remain unclear. Now, an international team of researchers led by ...

Scientists have identified a protein that may be key to proper sperm formation. Without it, male mice produced no viable ...

They see a microscopic flash at fertilization, a burst of fluorescence that marks a sudden release of zinc from the human egg ...

Researchers are inching closer to creating human eggs and sperm in the lab that carry a full complement of anyone's DNA. It could revolutionize... Creating a sperm or egg from any cell? Reproduction ...

It's a commonly held belief: Sperm cells are like runners in an epic race, competing against each other for access to the coveted egg at the finish line. The egg, in turn, waits patiently for the ...

The delicately mannered dance between discerning eggs and vying sperm is more complicated than scientists once believed, and it may hold secrets about the evolution of new species. In a paper ...

Researchers at the UC Davis College of Biological Sciences have discovered that a little-known protein called ATF7IP2 helps to inactivate the X and Y chromosomes during cell divisions that lead to ...

An egg cell and a sperm need to hold together tightly in the Fallopian tube in order to fuse, resulting in the creation of a new organism. One key part of this process involves the proteins Juno, on ...