In order for vertebrate embryos to develop their body axes, they require what is known as an embryonic signaling center. This group of cells provides the instructions that determine where up and down, left and right, and front and back are. Biologists at Friedrich Schiller University Jena have ...
Source: [Phys.org](https://phys.org/news/2026-06-jelly-embryos-reveal-embryonic-center.html)