The success of in vitro fertilization (IVF) depends on numerous factors, including the viability of sperm. A recent study ...

Each of those seven baby mice had two biological dads.

The little clump of cells looked almost like a human embryo. Created from stem cells, without eggs, sperm, or a womb, the embryo model had a yolk sac and a proto-placenta, resembling a state that ...

The success of in vitro fertilization depends on many factors, one of which is sperm viability. A recent study from the ...

Egg fertilization is often described as an epic swim meet: Millions of sperm swim as fast as they can toward the egg until one — the fastest, strongest, healthiest sperm of them all — wins the ...

The success of in vitro fertilization depends on many factors, one of which is sperm viability. A recent study from the ...

The success of in vitro fertilization depends on many factors, one of which is sperm viability. A recent study from the University of Illinois ...

Get Instant Summarized Text (Gist) A naturally occurring mechanism in mammals can prevent sperm from interacting with an egg, hindering fertilization. This involves a sperm antibody, OBF13, which ...