New insights into chordate body plan development answer long-standing questions on evolution Examination of development-relevant gene expression patterns in starfish embryos reveals how echinoderm ...

The neural crest, a source of many different cell types in vertebrate embryos, has not been identified in other chordates1,2,3. Current opinion therefore holds that neural crest cells were a ...

The image in the center shows a Ciona embryo, ... the largest in any chordate animal. In this latest study, the team characterized 14 Ciona notochord CRMs (Fig. 1), ...

Dec. 18, 2024 — Scientists have generated human stem cell models which contain notochord -- a tissue in the developing embryo that acts like a navigation system, directing cells where to build ...

The primitive chordate Pikaia gracilens lived 508 million years, ... Apart from its very primitive notochord—a flexible rod found in the embryos of chordates, ...

How does a developing embryo, which is initially round, tell left from right? This basic process is still poorly understood. However, investigating unusual cases can help shed light on how this ...