When sperm meets egg, the start of life is not quiet. Under a special microscope, researchers have watched a tiny light show at fertilization. They see a microscopic flash at fertilization, a burst of ...

Human bodies have to be built from a single egg cell that's fertilized by a sperm cell. Many rounds of cell division occur as the body is developing, and it seems that there are plenty of chances for ...

Intracytoplasmic sperm injection (ICSI) is a specialized form of in vitro fertilization (IVF) where a single sperm is injected directly into an egg. This technique is particularly beneficial for ...