There is a yolk sac, which has some of the roles of the liver and kidneys, and a bilaminar embryonic disc - one of the key hallmarks of this stage of embryo development. The hope is embryo models ...

poised to give rise to both the embryo and the amniotic sac that safeguards its development. Remarkably, heX-Embryoid models developed structures akin to blood islands, the initial sites ...

In normal embryonic development, cells repeatedly sort and ... an extra-embryonic cell layer that produces the nutrient-providing yolk sac and the embryonic layer that will give rise to the ...

The eggs were placed in an artificial culture vessel made of transparent film, allowing for real-time observation of the chick embryo's development from laying to hatching. Researchers at ...

Lipid utilization from the yolk sac plays a crucial role in embryonic development. Here, Chen et al. generate hsd17b12a mutant zebrafish and discover that a docosahexaenoic acid (DHA)-phosphatidic ...