Early lab work shows reprogrammed skin cells can yield embryos, hinting at future infertility solutions but raising safety ...

Despite significant biomedical advances in recent decades, the very earliest events of human development¬--those that occur during a critical window just after fertilization--have remained an ...

The technique, still in its early stages, could eventually help people facing age, illness, or same-sex infertility become ...

The majority of fertilized eggs die and are resorbed into the body. ZEISS Microscopy/Flickr, CC BY-SA As an evolutionary biologist whose career has focused on how embryos develop in a wide variety of ...

Fertilization is the union of two cells: an egg and a sperm. Before the egg and the sperm fuse, an event known as the "acrosome reaction" needs to occur in the sperm. Now, a team from Osaka University ...

Scientists based at The Rockefeller University have created an experimental system that models the implantation of a human embryo. The new system, an adaptation of one used to recapitulate the ...

Multiple genetic changes can occur before or early after conception, a new study describes. The researchers looked at a type of genetic change called copy number variants, which refers to the number ...