Nanoparticle (IMAGE) Brigham and Women's Hospital Caption Nanometer-sized 'drones' that deliver a special type of healing molecule to fat deposits in arteries could become a new way to prevent heart attacks caused by atherosclerosis. Credit Laguna Design/Science Photo Library/Corbis Usage Restrictions Please see <a href="http://www.corbisimages.com/stock-photo/royalty-free/42-40660714/nanoparticle-artwork?popup=1">http://www.corbisimages.com/stock-photo/royalty-free/42-40660714/nanoparticle-artwork?popup=1</a> 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.