Image Two - Breast Cancer Cells (IMAGE) Imperial College London Caption Drug-resistant breast cancer cells. The cell nucleus is in blue, with Keratin 80 shown in green. Credit Imperial College London/Institute of Cancer Research Usage Restrictions None 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.