From pre-gut cells to glory: Researchers discover a genomic control system that regulates gut formation in sea-urchin embryos

For all animals, development begins with the embryo. It is here that uniform cells divide and diversify, and blueprints are laid for structures, like skeletal and digestive systems. Although biologists have known for some time that signaling processes exist, there has not been a clear framework explanation of how it all comes together. Now, a research team has outlined exactly how specific sets of cells in sea-urchin embryos differentiate to become the endoderm.

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