ASP (IMAGE) Washington University in St. Louis Caption This is the operation of the acoustic shear poration (ASP) device in the lab of Mark Meacham at the School of Engineering & Applied Science at Washington University in St. Louis. Credit Washington University in St. Louis 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.