Life begins with a single fertilized cell that gradually transforms into a multicellular organism. This process requires ...

The curved shape of a zebrafish egg causes unequal cell divisions, creating larger cells near the animal pole and smaller ...

High-resolution 3D womb model gives insights into embryo implantation, infertility, and signals between embryo and mother, ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how a humble single cell becomes an organism fascinates scientists across ...

Transforming human stem cells into embryo-like structures was previously unthinkable. Yet seemingly overnight, multiple teams published initial results that reach towards this goal. Each team has a ...

Then researchers placed blastoids and embryos donated after infertility treatments inside the little device and watched it ...

Scientists have developed an experimental way to study how human embryos implant in a uterus, which may provide new insights ...

Our ancient past isn't always buried history. When it comes to our DNA, nearly 9% of the human genome is made up of leftover genetic material from ancient viruses (called endogenous retroviruses or ...

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 ...

The model allows scientists to study interactions between the womb and embryo, and look for causes behind implantation ...