A Growing Zebrafish
The winning video shows how neural crest cells (in green) migrate through a zebrafish embryo during development. In humans and other vertebrates, these progenitor cells will diversify into a wide variety of cells and structures, including parts of the heart and brain. Zebrafish are commonly used in a lab as a model organism, in large part because their transparent embryos allow scientists to see the early stages of life so clearly.
