Gastrulation is a crucial stage in embryonic development ... of a thickening at the midline of the developing embryo, the primitive streak. Here, ectoderm cells converge and ingress to form ...

The 14-day threshold is reached when a physical milestone happens and something called the "primitive streak" appears as the 1mm-long embryo organises ... more about this stage could lead to ...

Yale University researchers have discovered that glucose metabolism plays a critical role in guiding the early development of ...

The truth is, though, that the earliest stages of human development ... [Read: A woman gave birth from an embryo frozen for ...

Many four-legged animals go through embryonic stages that have similar features -- gill arches, a notochord, segmentation, and paddle-like limb buds -- as they develop into different adults.

Around the 14th day of embryonic development, a key stage in human growth called ... layers that form the early buds of organs. The primitive streak—a developmental precursor of the spine ...

Learn more about the National Academies’ various programs designed to connect, engage, and inspire. In 2005, the National Academies released the book, Guidelines for Human Embryonic Stem Cell Research ...

Now - the clever bit. The cells on the inside layer of this very early embryo can make all of the cell types needed in your body. They're called stem cells. The stem cells continue to divide by ...

Created with Sketch. Stage fright can be devastating both professionally and personally, but it’s not considered a full-blown phobia. However, an extreme fear of public speaking is a phobia ...

Look closely at this image, stripped of its caption, and join the moderated conversation about what you and other students see. By The Learning Network R.L. Stine, the author of the ...