Did you know there are over half a million zebrafish at the Eunice Kennedy Shriver National Institute of Child Health and Human Development zebrafish facility? These inch-long, transparent fish have a lot in common with us—we share about 70% of our genes—which makes them a useful model to study development, like the way that blood and lymphatic vessels form. Learn about the role of zebrafish in developmental biology on the new NIH Virtual Tour. https://go.nih.gov/Av9q9jN #WeAreNIH | National Ins