There is variability in when and how cells divide during the development of embryos. While researchers traditionally believed this variability was an obstacle that needed to be regulated, the Hiiragi ...

As a human embryo grows, a set of molecules directs cells as they multiply and take on specific identities and spatial positions within the embryo. In one crucial step known as gastrulation, these ...

For decades, scientists knew that male embryos in many mammal species—such as cows, mice, and even humans—tend to grow faster than female ones. But no one really knew why. The new study, published in ...

As humans gear up for an era of exploring places like the Moon and Mars, a big question arises: can humans reproduce in space? In many ways, we’re still far out from a definitive answer, and ...

Implantation, one of the most poorly understood phases of early human development, occurs in the depths of the womb, at a ...

At first glance, it looks like the start of a human pregnancy: A ball-shaped embryo presses gently into the receptive lining ...

A team of scientists in Israel say they’ve created a completely human-like embryo model without the need for a sperm or egg, up through 14 days of development. Reading time 3 minutes A team of ...

Scientists are exploring the possibilities of human reproduction in space, and while a new study shows promise, the scope of the research remains limited. Reading time 3 minutes As part of the next ...

STANFORD, Calif. (KGO) -- In the Camarillo bioengineering lab at Stanford, engineers measure impacts both big and small. And that ability can help in research as far ranging as preventing concussions ...

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 ...

Scientists have revealed thepreserved embryos of a 200-million-year-old dinosaur species. Using a state-of-the-art particle ...