A team of scientists has grown functional mouse sperm cells from cultures of embryonic stem cells.

In principle, embryonic stem cells can become any type of cell in the human body, but convincing them to differentiate into what scientists want them to become can be a challenge. For years, researchers have tried to shape stem cells into working sperm in a dish – with limited success. Now, researchers from China say they’ve not only managed to grow functional, sperm-like cells from a cultur