Melanoma Cells (IMAGE) University of Bonn Caption Melanoma cells (green) migrate particularly effectively on blood vessel surfaces (red). Credit (c) Photo: Tobias Bald/UKB Usage Restrictions The photo may be used with the press release. 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.