A colony of human embryonic stem cells is seen on a computer monitor at the University of Wisconsin–MadisonDarren Hauck / Getty Researchers at Newcastle University in England report they have coaxed ...

Sixteen years after doctors froze part of a boy’s testicle before chemotherapy, the tissue has helped him produce sperm as an ...

Exclusive: Sperm re-transplant offers hope that boys left infertile by chemotherapy could have biological children one day ...

Scientists have developed a ­method to temporarily halt the production of sperm cells without damaging surrounding tissues – ...

Scientists at Cornell University have made a major advance toward a long-awaited goal: a safe, reversible, nonhormonal male ...