Vesicle Formation (IMAGE) European Molecular Biology Laboratory Caption Clathrin proteins involved in endocytosis form a lattice that can dramatically change its shape to form the vesicle. Credit Ori Avinoam/EMBL 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.