Studying Cathepsin Levels (IMAGE) Georgia Institute of Technology Caption Manu Platt (left), an associate professor in the Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, and graduate student Keon-Young Park, produce high-quality images from the gels shown to quantify cathepsin activity. In a new study, the researchers are studying levels of cathepsins and other signaling chemicals in an effort to predict the invasiveness of breast cancer in individual patients. Credit Credit: Gary Meek, Georgia Tech 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.