Our understanding of human placenta formation just deepened with the discovery of a gene essential to early embryonic ...

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 ...

When it comes to the plight of the hundreds of thousands of IVF embryos frozen in the U.S. and elsewhere, it is often claimed ...

Scientists have grown a scalable new embryo-like model that unshrouds some mysteries of early human development, including blood cell formation, or hematopoiesis—a first for the field. In an article ...

(RNS) — Scientists have created a human embryo without the use of sperm or an egg — a true test-tube baby. Such embryos cannot (yet) develop into full-grown human beings. Even if transplanted into a ...

A team of scientists has just gotten a closer peek into one of the earliest and most fundamental steps of creating a human life. Research out today highlights how they captured—for the first ...

As nearly one in six couples experience fertility issues, in-vitro fertilization (IVF) is an increasingly common form of ...

During embryonic stem cell (ESC) development, pluripotent stem cells transition from a naïve state into a primed state before they take their first steps toward a lineage commitment. Jacob Hanna, a ...

Although scientists know a lot about the process of human embryo implantation, it had never been recorded in real time, until now. Now that investigators can observe it in action, they may be able to ...