Gastruloid with Somites (image) Hubrecht Institute Share Print E-Mail Caption This is a picture of a gastruloid in which the somites, the precursors of the vertebrae and muscles, are stained in blue. Credit Vincent van Batenburg, ©Hubrecht Institute Usage Restrictions The image may only be used with the appropriate caption and credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.