Neutrophil Extracellular Traps (IMAGE) Cell Press Caption This image show how neutrophil's extracellular traps glue together gallstone gravel (left) and the crystalline gallstone building blocks cholesterol (middle) and calcium carbonate (right). Scale bar 20μm. Credit Munoz et al./Immunity Usage Restrictions Credit Required. 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.