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 ...

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 ...

Much like guided missiles that sense the heat of a plane's engine, sperm are guided to the fertilization site by temperature, reports a Weizmann Institute study published in the current issue of ...

The research could open up avenues for fertility treatments after additional refinement and trials, but it also raises ...

The embryos weren’t used to try to establish a pregnancy, but the researchers behind the technique say it could one day be ...

Sea urchin eggs, a common model for human fertility research, create a protein shield just minutes after fertilization. In Developmental Cell, Brown University biologists reveal their discovery of an ...

Researchers have succeeded in making human skin cells behave like egg cells, though the resulting fertilized embryos run them ...

Researchers at Oregon Health & Science University have accomplished a unique proof of concept to treat infertility by turning ...

SAN FRANCISCO -- A cellular signaling system that responds to THC, the active substance in marijuana, as well as to anandamide, a cannabinoid-like molecule normally produced in the body, may regulate ...

During fertilization, an egg's 23 chromosomes combine with 23 chromosomes from ... The goal would be to better capture what happens in a natural human pregnancy so that the right chromosomes are lost ...