Mound of Insulin Blocks (IMAGE) University of Houston Caption Thousands of block-shaped insulin molecules, each measuring five nanometers, attach themselves to crystals in special locations known as kinks. Vekilov and Georgiou found that groups of insulin blocks form mounds, resulting in the creation of multiple kinks. These additional kinks provided by the mounds allow for rapid growth of insulin crystals. Credit University of Houston 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.