Enhanced PDT Therapy (IMAGE) University at Buffalo Caption The laser irradiated area (the white square) shows live cancer cells (green) as well as dead cancer cells (red) as a result of the irradiation. Credit University at Buffalo 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.