For the first time, a stem cell model has produced a structure resembling an early human embryo with a yolk-sac-like structure, from a single starting stem cell population and without direct genetic ...

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 ...

For the first time, scientists have used human cells to make structures that mimic the earliest stages of development, which they say will pave the way for more research without running afoul of ...

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 ...

Sperm cell navigation, egg cell fertilisation, and early embryo development are negatively affected by simulated low gravity (microgravity) conditions, according to a study involving human, mice and ...

In a zero-gravity environment, sperm's ability to orient and navigate towards an egg was significantly reduced. Provided by Getty Images Bank Another hurdle has emerged that must be overcome for ...

SALT LAKE CITY — A Utah lawmaker has introduced a bill that would require Utah schools to show students videos of fertilization and development of a fetus inside the womb. HB315, titled Human Growth ...