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

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific ... to better study and learn how to treat developmental disorders or mutations. “These models have a ...

Researchers at City of Hope have found that cell mutations are necessary but not always sufficient for tumors to form.

Eggs typically require fertilization by sperm from different colonies ... they need to be present in the reproductive or germline cells. Mutations that develop throughout life are thought to remain ...