In an advance for treating male infertility, researchers transplanted a patient with his own sperm-forming stem cells that ...

It's commonly thought that sperm "race" to the egg, with the winner fertilizing it. But is this really the case?

"These cells co-develop together, just like they would in an actual embryo, and establish that history of being neighbors," ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery ... and their organization into an ordered multicellular embryo takes place in the protective ...

As for the dodo, the Nicobar Pigeon is the closest living relative, and the Solitaire, a type of extinct bird that was found ...

One childless man’s journey through the sci-fi start-ups, DIY donor clubs, and group masturbation retreats attempting to save ...

A key part of the fertility process involves IZUMO1, a protein on the surface of sperm cells, and JUNO ... the way sperm come into contact with an egg. The analysis also identified a high-affinity ...

A key part of the fertility process involves IZUMO1, a protein on the surface of sperm cells, and JUNO ... the way sperm come into contact with an egg. The analysis also identified a high-affinity ...

One of the main arguments made for bodyoids is that they could provide spare human organs. There’s a huge shortage of organs ...

Just because a sperm is a strong swimmer doesn't necessarily mean it has the right amount of DNA, Dr. Lisa Lee told Newsweek.