Egg Chamber Rotation (IMAGE) University of Chicago Medical Center Caption The Drosophila egg chamber rotates as it develops into an egg. This rotation occurs because the epithelial cells that form the egg chamber's outer layer outer collectively migrate along the extracellular matrix (green) that surrounds each organ-like structure. Credit Barlan, et al / University of Chicago Usage Restrictions None License Licensed content 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.