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

We often imagine sperm as swimmers, tiny cells whipping their tails to power through fluid on a mission toward the egg. However, a new discovery from Monash University researchers reveals a far more ...

Human sperm can swim through surprisingly viscous fluids with ease – and they seemingly defy Newton's third law of motion to do so. To figure out how they slither through substances that should, in ...

TL;DR: College students will compete in a unique sperm race using microfluidic chips that simulate the reproductive system, promoting male health awareness. Backed by $1.5 million in funding, the ...

Katsuhiko Hayashi, a developmental geneticist at Osaka University, is working on ways to make what he calls "artificial" eggs and sperm from any cell in the human body. (Kosuke Okahara for NPR) ...

Athletics enthusiasts, here is a new competition for you to ogle: Sperm Racing. You may have read that male fertility is declining, and that decreased sperm motility (speed of travel) is apparently a ...

Ultrastructure expansion microscopy of murine male germ cells reveals the fine molecular structures of centrioles (shown in the enlarged image). DNA is stained in blue, and the chromosome axis in red.

Katsuhiko Hayashi pulls a clear plastic dish from an incubator and slides it under a microscope. "You really want to see the actual cells, right?" Hayashi asks as he motions toward the microscope.