For generations, who carried the unspoken weight when a couple faced difficulties conceiving? Historically, misconceptions ...

A commentator yells excitedly as hundreds of spectators stand glued to a video of a racecourse -- but the athletes they are ...

It may sound like the plot of a futuristic comedy, but it’s 100% real: Los Angeles is gearing up to host the world’s first sperm race — a one-of-a-kind event where the smallest competitors battle it ...

Semen, also known as seminal fluid, is the fluid secreted from the penis during ejaculation. The fluids are populated with spermatozoa (sperm cells) that can fertilize an egg. When viewed under the ...

A 26-year-old American man has become the world’s first to receive a sperm-making stem cell transplant in a groundbreaking experiment aimed at reversing infertility. Jaiwen Hsu suffered from ...

A man in his early 20s has received the world's first sperm-making stem cell transplant in a new procedure that could be groundbreaking for infertility treatment. Until now, the procedure had ...

In most cells, DNA is wrapped around proteins called histones, allowing it to be loosely packed and accessible for gene activity. However, in sperm cells, histones are replaced by protamines ...

As part of a cutting-edge study aimed at restoring fertility in young male cancer survivors, a 26-year-old man who had childhood cancer has received the first known transplant of sperm-producing stem ...

If the genes of a tiny, bumless invertebrate are anything to go by, our anuses might be repurposed sperm chutes. A new study suggests instead of releasing waste, the first anal orifice was an exit ...

A man who battled childhood cancer has received the first known transplant of sperm-producing stem cells, in a study aimed at restoring the fertility of cancer's youngest survivors. Jaiwen Hsu was ...

Copyright 2025 The Associated Press. All Rights Reserved. Copyright 2025 The Associated Press. All Rights Reserved. Researchers have performed the first known ...