(IMAGE) Friedrich-Schiller-Universitaet Jena Caption Proteins from breast cancer cells are separated and analysed at the University of Jena, Germany using gel electrophoresis; specifically, the loading of a gel with a protein extract produced from cells to which a blue dye has been added. Credit Image: Jens Meyer/University of Jena Usage Restrictions Image can be used free of charge in connection with this press release. License Original 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.