Only a few of them, other than primates and elephants, are known to have the cells: humpback whales, sperm whales ... sensations and social emotions. Illustration by Guilbert Gates John Allman ...

A commentator yells excitedly as hundreds of spectators stand glued to a video of a racecourse—but the athletes they are rooting for are actually tiny sperm cells. The unusual sport was invented ...

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 ...

A man in his early 20s received a transplant of his own sperm-producing stem cells, which had been frozen since his childhood, in an attempt to regain fertility. Doctors are waiting to see if the ...

A commentator yelled excitedly as hundreds of spectators stood glued to a video of a racecourse — but the athletes they were rooting for were tiny sperm cells. The unusual sport was invented by ...

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 ...

Amid an ongoing measles outbreak, the US is also facing a surge in pertussis, or whooping cough. As vaccine rates drop, other ...

If future Mars colonizers want to survive without pressure suits, they’ll need to generate a denser atmosphere. One way to ...

This pattern of light absorption can be used to isolate specific cell associations during sperm cell differentiation. From stages XII–VI, spermatids (steps 12–16) are arranged in bundles ...