To figure out how they slither through substances that should, in theory, resist their movement, a team led by Kenta Ishimoto ...

Human sperm have long been a subject of fascination—not just for their role in fertilization, but for their remarkable ability to navigate through some of the most viscous environments in the body.

Once a sperm has broken through to an egg cell in order to fertilize it, the two cells need to hold together tightly. This ...

How a sperm and an egg fuse together has long been a mystery. New research by scientists in Austria provides tantalizing clues, showing fertilization works like a lock and key across the animal ...

Once a sperm has broken through to an egg cell in order to fertilise it, the two cells need to hold together tightly. This ...