Malignant Breast Cells (image) University of California - Berkeley Caption Shown are fluorescence images of uncompressed (left) and compressed (right) colonies of malignant breast epithelial cells. Compressed colonies are smaller and more organized. Credit Images courtesy of Fletcher Lab Usage Restrictions All rights reserved. Commercial use prohibited. 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.