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

Scientists deposited sperm-size beads into the uteruses of 64 women ... make it all the way to where the egg is," Miller said. "A lot of them are flushed back out from the tract. Some are eaten up by ...

"[The] majority of the sperm shown in the video won't make it to the egg but in IVF, we can assist by injecting the sperm directly into the egg ... when sperm cells stick together—"is not ...

Each of those seven baby mice had two biological dads.

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

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

"Abnormal sperm formation impairs their ability to fertilize egg cells," explains Yuki Kaneda ... the findings from this study provide important insight into the causes of male infertility.

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 ...