to generate two others (endoderm and mesoderm), which then form various cell and tissue types. One of the earliest signs of gastrulation in reptiles, birds and mammals (amniotes) is the appearance ...

During gastrulation, the collection of uniform cells that make up the early embryo break symmetry and reorganize into a multi-layered structure with distinct cell types. At this pivotal moment ...

Etemadi explained that gastrulation involves movement of epiblast cells — cells that can differentiate into any cell type in the body — to form the definitive endoderm and the mesoderm. Gastrulation ...