Beads left magnetic sperm healthier than untagged cells, and a magnet steered them to an egg, a step toward conception inside ...

A new study identifies the defective function of CatSper, an ion channel controlling calcium levels in sperm, as a common cause of seemingly unexplained male infertility. CatSper-deficient human sperm ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Ideas about how the female ...

Paterna Biosciences says it has determined the set of instructions needed to turn sperm-making stem cells into "normal, mature" sperm.

After the egg has been fertilized by a sperm, the surrounding egg coat tightens, mechanically preventing the entry of additional sperm and the ensuing death of the embryo. This is according to a new ...

Some men produce too many sperms. That little-mentioned fact was the focus of my previous blog post. (See Why Too Many Sperms Spoil the Egg, posted on August 11, 2017.) With too many sperms, an ...

Within minutes of fertilization, the egg of a fruit fly becomes a scene from the battle of the sexes. The egg attacks and destroys the cellular "power plants" (mitochondria) from the sperm that had ...

So you have finally found the partner of your dreams—but no matter how hard you try, no children have come along. Could ...

With the help of the ESRF, researchers from Karolinska Institutet (Sweden) have discovered the reproductive mechanism that permanently blocks polyspermy — a pathologic condition that arises when more ...