Once a sperm has broken through to an egg cell in order to fertilize it, the two cells need to hold together tightly. This ...

Scientists reveal one of nature’s strongest bonds When a sperm finally reaches an egg, its journey is far from over. Before a ...

Sex cells made from scratch could revolutionize human reproduction. But researchers are struggling to translate promising ...

US scientists testing the technique say it could help people overcome infertility and potentially allow same-sex couples to ...