Scientists have long observed that embryos of different species within a phylum look quite distinct at early and late ...

A chronological map of the fetal brain reveals when key cells emerge and provides clues about autism and cancer.

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 ...

How does a tiny cluster of cells become an embryo with a head, trunk, and tail? And how do thousands of genes coordinate this development? A new imaging method makes it possible to visualize the ...

Researchers at the Francis Crick Institute have developed a new stem cell model of the mature human amniotic sac, which replicates development of the tissues supporting the embryo from two to four ...

Mammalian oocytes utilize a conserved combination of cell cycle control, cytoskeletal organization, and polarity pathways that are fundamentally shared with other vertebrates and invertebrates.