In an advance for treating male infertility, researchers transplanted a patient with his own sperm-forming stem cells that ...

human sperm propel themselves through viscous fluids, seemingly in defiance of Newton's third law of motion, according to a recent study that characterizes the motion of these sex cells and single ...

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 ...

Beating pattern of a human sperm cell before (left) und after (right) activation of CatSper. The more powerful beat is required to fertilize the egg Disclaimer: AAAS and EurekAlert! are not ...

Finally, to assess if the sperm derived from this protocol was actually functional ... posed by developmental differences among species, attempts to generate human germ cells have to date involved ...

Today, 85% of children with cancer survive to adulthood and about 1 in 3 are left infertile from chemotherapy or radiation.

One childless man’s journey through the sci-fi start-ups, DIY donor clubs, and group masturbation retreats attempting to save ...

In a mouse or human embryo, the cells that will one day produce sperm or eggs are already earmarked for that future purpose, ...

As viewed from a human perspective ... If you're male, your body uses meiosis to create sperm cells; if you're female, it uses meiosis to create egg cells. Others cells in your body contain ...

In a potential breakthrough for infertility and genetic disease treatments, scientists at Kyoto University have succeeded in mass-generating precursors to sperm and eggs from human iPS cells. Two ...

The success of in vitro fertilization depends on many factors, one of which is sperm viability. A recent study from the ...