Artificial Lung the Size of a Sugar Cube (image) Fraunhofer-Gesellschaft Caption The 3-D lung tumor model helps researchers to test medications. Credit © Fraunhofer IGB Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. 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.