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

Embryo development starts when a single egg cell is fertilized and starts dividing continuously. Initially a chaotic cluster, it gradually evolves into a highly organized structure. Scientists have ...

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

Shelby is an assistant editor for The Scientist. She earned her PhD from West Virginia University in immunology and microbiology and completed an AAAS Mass Media fellowship. View full profile. Learn ...

The mystery of early embryonic communication is starting to be unraveled thanks to a new stem cell-based model.

By engineering a system replicating the womb lining with high biological accuracy, researchers at the Babraham Institute and ...

A discovery upends decades of assumptions regarding DNA replication. The study show that DNA replication in early embryos is different from what past research has taught, and includes a period of ...

University of Cambridge scientists have used human stem cells to create three-dimensional embryo-like structures that replicate certain aspects of very early human development—including the production ...

The team placed blastocysts—embryos 5-6 days after fertilization that were donated following IVF procedures—onto the artificial endometrium. The blastocysts attached to the surface of the lining, ...

A new discovery by researchers at the RIKEN Center for Biosystems Dynamics (BDR) in Japan upends decades of assumptions regarding DNA replication. Led by Ichiro Hiratani and colleagues, the ...