Eric Strieter, UMass Amherst (IMAGE) University of Massachusetts Amherst Caption Eric Strieter at UMass Amherst says he and his chemistry lab group have discovered how an enzyme known as UCH37 regulates a cell's waste management system. Credit UMass Amherst/Strieter lab 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.