Observing Cells (IMAGE) Georgia Institute of Technology Caption Researchers Mark Prausnitz and Robyn Schlicher use a confocal microscope to study cells whose membranes have been opened by the application of ultrasound. Credit Photo: Gary Meek 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.