Photoacoustic Image of a Melanoma (VIDEO) Washington University in St. Louis This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption With the help of nanoparticles, that are engineered to absorb light strongly, and to bind to proteins on cancerous cells, a melanoma is revealed in stunning clarity. To capture the overlaying blood vessels, the imaging system is then tuned to a different wavelength that is strongly absorbed by hemoglobin. Credit Posted with permission from <I>ACS Nano, </I> 10.1021/nn100736c Usage Restrictions Please use credit line above 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.