In a proof-of-concept experiment, scientists demonstrated that you can create and fertilize human eggs in the lab using sperm ...

Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilizes it. This fundamental step in procreation happens dynamically and seemingly without ...

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 ...

An epigenetic factor that is essential for producing mature egg cells in mice has been identified by RIKEN researchers for ...

Scientists at Harvard Medical School announce that they have used embryonic stem cells of mice to create mouse sperm cells capable of fertilizing egg cells. Experts say that the research, published in ...

For some couples, even in vitro fertilization (IVF) cannot fulfill the desire for a biological child. Women who have undergone cancer treatment, those whose egg reserves have declined with age, and ...

New research from Oregon Health & Science University describes the science behind a promising technique to treat infertility by turning a skin cell into an egg that is capable of producing viable ...

This undated image provided by the Mitalipov Laboratory at Oregon Health & Science University shows a a microscope image of a human egg that contains a nucleus taken from a skin cell. (Mitalipov ...

When the female gametes in plants become fertilized, a signal from the sperm activates cell division, leading to the formation of new plant seeds. This activation can also be deliberately triggered ...