Leukaemia Cells (IMAGE) Walter and Eliza Hall Institute Caption Treating acute lymphoblastic leukaemia cells with the drug CX-5461 disrupts the nucleolar ribosome machinery shown by the fibrillarin protein (green) in the nucleus (blue) that stimulates the nucleolar stress response and initiates leukaemia cell death. Credit: Peter Mac Credit Peter Mac Usage Restrictions Free to share, must credit. 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.