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 ...

Medical professionals and fertility clinics are prohibited, under penalty of law, from experimenting on a prospective parent(s) human reproductive material, including sperm, ovum, or embryo at any ...

In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a 'fairy tale,' rooted in ...