Scientists have identified a protein that may be key to proper sperm formation. Without it, male mice produced no viable sperm, they found. A team at the RIKEN Center for Biosystems Dynamics Research ...

The human body is full of checks and balances that ensure correct growth, development, and function of all our different systems. Now, researchers from Japan have reported a newly discovered protein ...

Researchers at Newcastle University in England report they have coaxed the first human sperm cells from embryonic stem cells, in a remarkable demonstration of how quickly the field of stem-cell ...

Sperm play a critical role in the creation of new life, delivering essentially half of the genetic material required. The success of this process relies on the generation of a developmentally ...

Electron microscope image of mouse sperm head. The mouse sperm head is characterized by a crescent shape, whereas in TEX38-deficient sperm the head is bent backward 180 degrees. Osaka, Japan – The ...

Human reproduction requires both male and female gametes. Gametes are special sex cells that contain the genetic information necessary to create a new life. Men produce millions of gametes called ...