Read this article at https://www.sciencejournalforkids.org/articles/how-can-we-grow-models-of-embryos-in-the-lab/ or watch at https://youtu.be/LZwOoGVGVFI

Summary: Scientists used stem cells to grow 3D models of blastocysts to be able to study the development of embryos.

Abstract: Studying embryos is important to understanding how humans develop. It can also help us understand some pregnancy complications. But access to embryos is very limited. We wanted to find a way to study embryos without actually needing any! We used stem cells to grow models of blastocysts – young embryos. Our experiments showed that stem cells can form structures that look like blastocysts. We called these models blastoids. Blastoids grow and develop at a similar speed as blastocysts. They also have the same size and cell composition. They are not embryos and cannot develop into an organism. But blastoids are a useful way to study human development.

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