Breast Cancer Sleeper Cells (IMAGE) Imperial College London Caption Breast cancer sleeper cells: Dormant 'sleeper' cells (red) and active cancer cells (green). Credit Luca Magnani et al. <i>Nature Communications</i> 2019 Usage Restrictions Only in relation to Luca Magnani et al. Nature Communications 2019 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.